What is more reactive, Lead or Hydrogen?

What is more reactive, Lead or Hydrogen?
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Answer :

Lead(Pb) . I just asked my chem professor.
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Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum

Description : Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum

Last Answer : ANSWER: X -- COPPER

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Description : Answer: a, b, c, d Free oxygen radicals are chemical species that are intermediates in the normal process of cellular respiration. Oxidants that are free radicals have been implicated as initiators of ... a. C-reactive protein b. Serum amyloid c. a -Proteinase inhibitor d. Fibrinogen e. Albumin

Last Answer : Answer: a, b, c, d The acute-phase response is a series of homeostatic responses of the organism to tissue injury in infection and inflammation. After an inflammatory stimulus occurs, a number ... 30% to 50% of the level before injury. The reason for the decrease in production is poorly understood

The apparent power in a purely inductive circuit is also known as _____________. A. true power B. lead power C. induced power D. reactive power

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W.R.T Sales and Lead Generation, Web Analytical can be useful in  Providing actionable data  Lead Generation  Reactive Sales Technique  All of the above

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Write the molecular formulae of: 1. Copper oxide 2. Iron (III) chloride 3. Sodium hydroxide 4. Iron (II) sulphide 5. Lead (II) oxide 6. Hydrogen nitrate (nitric acid) 7. Hydrogen sulphate (sulphuric acid) 8. Calcium hydroxide 9. Magnesium carbonate 10.Ammonium carbonate

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Last Answer : 1. Copper oxide - CuO 2. Iron (III) chloride - FeCl3 3. Sodium hydroxide - NaOH 4. Iron (II) sulphide - FeS 5. Lead (II) oxide - PbO 6. Hydrogen nitrate (nitric acid) - HNO3 7. ... ) - H2SO4 8. Calcium hydroxide - Ca(OH)2 9. Magnesium carbonate - MgCO3 10.Ammonium carbonate - (NH4)2CO3

Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. The data illustrates [AMU 1983] (A) Law of reciprocal proportions (B) Law of constant proportions (C) Law of multiple proportions (D) Law of equivalent proportions

Description : Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. ... (B) Law of constant proportions (C) Law of multiple proportions (D) Law of equivalent proportions

Last Answer : (C) Law of multiple proportions

Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

Description : Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

Last Answer : ANSWER: A - THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN GAS  

Name the reducing agent in the following reaction: 3MnO2 + 4Al———— > 3Mn + 2Al2O3 State which is more reactive, Mn or A1 and why? -Chemistry

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Last Answer : ‘Al’ is reducing agent. ‘AT is more reactive than Mn v ‘Al’ displaces Mn from its oxide.

If Metal A displaces Metal B from its solution, then Metal A _______. (1) is more reactive than B (2) is less reactive than B (3) is heavier than B (4) has the same reactivity as B

Description : If Metal A displaces Metal B from its solution, then Metal A _______. (1) is more reactive than B (2) is less reactive than B (3) is heavier than B (4) has the same reactivity as B

Last Answer : (1) is more reactive than B

Why is SF4 more reactive than SF6 ?

Description : Why is SF4 more reactive than SF6 ?

Last Answer : Ans . SF4 has two unpaired electrons which it can donate further to extend its valency , hence it is reactive .’S’ in SF6 has maximum 6 0.S.

Why is fluorine (F2) more reactive than chlorine (Cl2)?

Description : Why is fluorine (F2) more reactive than chlorine (Cl2)?

Last Answer : Ans. F2 is more reactive than Cl2 due to greater repulsion in the non-bonded electron pairs in the molecule of F2 as compared to Cl2 therefore the bond cleavage in fluorine becomes easier.

Would you expect benzaldehyde to be more reactive or less reactive in nucleophlic addition reaction than propanal ? Explain.

Description : Would you expect benzaldehyde to be more reactive or less reactive in nucleophlic addition reaction than propanal ? Explain.

Last Answer : C-atom of carbonyl group of benzaldehyde is less electrophilic than C-atom of carbonyl group in propanal. Polarity of carbonyl group is in benzaldehyde reduced due to resonance making it less ... group in it is more than in benzaldehyde. This makes propanal more reactive than benzaldehyde. 

Why are aldehydes more reactive than ketones ?

Description : Why are aldehydes more reactive than ketones ? 

Last Answer : Ans. It is because of 2 reasons : The carboxyl compounds (both aldehydes & ketones) undergo nucleophilic addition reaction. (i) + I effect : The alkyl group in ketones due to their e- ... its reactivity. (ii) Steric hindrance : Due to steric hindrance in ketones, they are less reactive.

Which of the following statements correctly describes the general reactivity of alkynes? (a) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. (b) The σ bonds of alkynes are higher in energy than the bonds and are thus more reactive. (c) Unlike alkenes, alkynes fail to undergo electrophilic addition reactions. (d) Alkynes are generally more reactive than alkenes.

Description : Which of the following statements correctly describes the general reactivity of alkynes? (a) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. (b) The σ bonds ... fail to undergo electrophilic addition reactions. (d) Alkynes are generally more reactive than alkenes.

Last Answer : Alkynes are generally more reactive than alkenes.

Is it true that reactive oxygen species (ROS) have only one electron and that causes them to be unstable and thus try to grab an electron from other molecules?

Description : Is it true that reactive oxygen species (ROS) have only one electron and that causes them to be unstable and thus try to grab an electron from other molecules?

Last Answer : answer:You're close, but it's not that they have one electron. Usually they need one electron (you can have species that need more, but one is more typical). The Reactive' bit comes from the ... unpaired electron, by the way). However, 7 is the most common and tends to have the higher reactivity.

Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

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Last Answer : (1) Sodium Explanation: Sodium is a very reactive metal. It reacts vigorously with oxygen and water. A lot of heat is generated in this process. Therefore, it is stored in kerosene to avoid contacts between either atmospheric oxygen or water.

The most reactive among the halogens is (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Description : The most reactive among the halogens is (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Last Answer : (1) Fluorine Explanation: Fluorine is one of the most reactive elements in existence, attacking otherwise inert materials such as glass, and forming compounds with the heavier noble gases. It is a ... react with glass in the presence of small amounts of water to form silicon tetrafluoride (SiF4).

Compounds of carbon having double or triple bonds between their carbon atoms are called (1) Saturated compounds (2) Unsaturated compounds (3) Reactive compounds (4) None of the above

Description : Compounds of carbon having double or triple bonds between their carbon atoms are called (1) Saturated compounds (2) Unsaturated compounds (3) Reactive compounds (4) None of the above

Last Answer : (2) Unsaturated compounds Explanation: Compounds of carbon, which are linked by only single bonds between the carbon atoms are called saturated compounds. Compounds of carbon having double or triple bonds between their carbon atoms are called unsaturated compounds.

Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Description : Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Last Answer : (2) White phosphorus Explanation: White phosphorus is the most reactive form of phosphorus. It is made up of discrete P4 tetrahedra which are subjected to very high angular strain as the angles ... reactive. It ignites spontaneously at about 50°C, and at much lower temperatures if finely divided.

The most reactive among the halogens is - (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Description : The most reactive among the halogens is - (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Last Answer : (1) Fluorine Explanation: As a general rule, fluorine is the most reactive halogen and astatine is the least reactive. All halogens form Group 1 salts with similar properties.

The most reactive among the halogens is - (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Description : The most reactive among the halogens is - (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Last Answer : (1) Fluorine Explanation: As a general rule, fluorine is the most reactive halogen and astatine is the least reactive. All halogens form Group 1 salts with similar properties.

why sodium is less reactive than potassium?

Description : why sodium is less reactive than potassium?

Last Answer : Ans. The ionization enthalpy of potassium is less than that of sodium and the electrode potential of Potassium (-2.95 V) is more negative than that of sodium (-2.71 V) and hence sodium is less reactive than potassium.

Among the elements of the 3rd period from Na to Ar, pick out the element: (L-2) (a). with highest first ionization enthalpy. (b). with largest atomic radius. (c). that is most reactive non-metal. (d). that is most reactive metal.

Description : Among the elements of the 3rd period from Na to Ar, pick out the element: (L-2) (a). with highest first ionization enthalpy. (b). with largest atomic radius. (c). that is most reactive non-metal. (d). that is most reactive metal.

Last Answer : (a). Ar has highest first ionization enthalpy. (b). Na has large atomic radius (covalent radius). (c). Cl is more reactive non-metal in 3rd period. (d). Na is most reactive metal in third period.

Aryl halides are less reactive towards nucleophilic substitution as compared to alkyl halides due to (a) Inductive effect (b) Resonance stabilization (c) Tautomerism (d) Stereoisomerism

Description : Aryl halides are less reactive towards nucleophilic substitution as compared to alkyl halides due to (a) Inductive effect (b) Resonance stabilization (c) Tautomerism (d) Stereoisomerism

Last Answer : Resonance stabilization

Which of the following cycloalkanes is most reactive? (a) Cyclopropane (b) Cyclohexane (c) Cyclobutane (d) Cycloheptane

Description : Which of the following cycloalkanes is most reactive? (a) Cyclopropane (b) Cyclohexane (c) Cyclobutane (d) Cycloheptane

Last Answer : Cyclopropane

Which of the following halides is least reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2Cl

Description : Which of the following halides is least reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2Cl

Last Answer : (CH3)3CCH2I

Which of the following halides is most reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2C

Description : Which of the following halides is most reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2C

Last Answer : (CH3)2CHCHICH3

Which is the most reactive alkyl halide in a SN1 reaction? (a) CH3F (b) CH3Br (c) CH3I (d) CH3Cl

Description : Which is the most reactive alkyl halide in a SN1 reaction? (a) CH3F (b) CH3Br (c) CH3I (d) CH3Cl

Last Answer : CH3I

Which of the following species is most reactive in a SN2 reaction? (a) CH3CH2Cl (b) CH3CH2Br (c) CH3CH2I (d) CH3CH2F

Description : Which of the following species is most reactive in a SN2 reaction? (a) CH3CH2Cl (b) CH3CH2Br (c) CH3CH2I (d) CH3CH2F

Last Answer : CH3CH2I

Why is the halogenation of alkanes considered a chain reaction? (a) it occurs quickly. (b) it occurs without the generation of intermediates. (c) each step generates the reactive intermediate that causes the next step to occur. (d) the reaction allows long chains of halogenated alkanes to be formed

Description : Why is the halogenation of alkanes considered a chain reaction? (a) it occurs quickly. (b) it occurs without the generation of intermediates. (c) each step generates the reactive intermediate that causes the next step to occur. (d) the reaction allows long chains of halogenated alkanes to be formed

Last Answer : each step generates the reactive intermediate that causes the next step to occur

40. Among the fo the one that is most reactive towards electrophilic nitration is: (1) Benzene (2) Benzoic acid (3) Nitrobenzene (4) Toluene

Description : 40. Among the following compounds the one that is most reactive towards electrophilic nitration is: (1) Benzene (2) Benzoic acid (3) Nitrobenzene (4) Toluene

Last Answer : Toluene

20. Which one of the following statements is incorrect about enzyme catalysis? (1) Enzymes are least reactive at optimum temperature (2) Enzymes are mostly proteinous in nature (3) Enzyme action is specific (4) Enzymes are denaturated by ultraviolet rays and at high temperature

Description : 20. Which one of the following statements is incorrect about enzyme catalysis? (1) Enzymes are least reactive at optimum temperature (2) Enzymes are mostly proteinous in nature (3) Enzyme action is specific (4) Enzymes are denaturated by ultraviolet rays and at high temperature

Last Answer : Enzymes are least reactive at optimum temperature

Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Description : Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Last Answer : White phosphorus

Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

Description : Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

Last Answer : Sodium

The most reactive among the halogens is (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Description : The most reactive among the halogens is (1) Fluorine (2) Chlorine (3) Bromine (4) Iodine

Last Answer : Fluorine

If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains A. Hydrogen sulphide B. Carbon dioxide C. Methane D. Oxygen

Description : If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains A. Hydrogen sulphide B. Carbon dioxide C. Methane D. Oxygen

Last Answer : ANS: A

Lead acetate test in sewer manhole is done to test the presence of A. Methane gas B. Hydrogen sulphide C. Carbondioxide gas D. Diesel vapours

Description : Lead acetate test in sewer manhole is done to test the presence of A. Methane gas B. Hydrogen sulphide C. Carbondioxide gas D. Diesel vapours

Last Answer : ANS: B

During discharge of a lead-acid storage battery, which of the following actions occurs? A. The acid becomes stronger. B. Both plates change chemically to ammonium chloride. C. The acid becomes weaker. D. Hydrogen gas is liberated.

Description : During discharge of a lead-acid storage battery, which of the following actions occurs? A. The acid becomes stronger. B. Both plates change chemically to ammonium chloride. C. The acid becomes weaker. D. Hydrogen gas is liberated.

Last Answer : Answer: C

Which of the following activities occurs during the charging process of a lead-acid storage battery? A. The specific gravity of the acid increases. B. Both plates change chemically to lead sulfate. C. The specific gravity of the acid decreases. D. Hydrogen gas is absorbed.

Description : Which of the following activities occurs during the charging process of a lead-acid storage battery? A. The specific gravity of the acid increases. B. Both plates change chemically to lead sulfate. C. The specific gravity of the acid decreases. D. Hydrogen gas is absorbed.

Last Answer : Answer: A

Caution must be exercised during the charging of lead-acid storage batteries as _____________. A. the acid will become weaker B. hydrogen gas is being continuously liberated C. both plates are changing chemically to lead sulfate D. lead peroxide in the negative plate is poisonous

Description : Caution must be exercised during the charging of lead-acid storage batteries as _____________. A. the acid will become weaker B. hydrogen gas is being continuously liberated C. both plates are changing chemically to lead sulfate D. lead peroxide in the negative plate is poisonous

Last Answer : Answer: B

When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Description : When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Last Answer : Answer: B

Local action in a dry-cell, or lead-acid storage battery is the process whereby ________________. A. hydrogen gas is liberated B. the electrolyte compensates for overcharging C. potassium hydroxide absorbs carbon dioxide from the air D. the battery becomes discharged without being connected to a load

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Last Answer : Answer: D

The electrolyte in a lead-acid storage battery consists of distilled water and _____________. A. hydrogen chloride B. calcium chloride C. sulfuric acid D. muriatic acid

Description : The electrolyte in a lead-acid storage battery consists of distilled water and _____________. A. hydrogen chloride B. calcium chloride C. sulfuric acid D. muriatic acid

Last Answer : Answer: C

Copper is completely miscible with (A) nickel. (B) gold. (C) hydrogen. (D) lead.

Description : Copper is completely miscible with (A) nickel. (B) gold. (C) hydrogen. (D) lead.

Last Answer : (B) gold.

Minamata disease is due to pollutant a) Lead b) Mercury c) Hydrogen Sulphide d) Sulphur dioxide

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Last Answer : b) Mercury

When we are very reactive to certain people, does it say more about us or them?

Description : When we are very reactive to certain people, does it say more about us or them?

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Which of the following would be more reactive than magnesium?

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Which is more reactive phosphorus or chlorine?

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Statement I: In strongly acidic solutions , anline becomes more reactive towards electrophilic reagents Statement II: The amino group being completely

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Of the interhalogen compounds, `CIF_3` is more reactive than `BrF_3` , but `BrF_3` has higher conductance in the liquid state. The reason is that

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