What are spectator ions?

1 Answer

Answer :

During a neutralization reaction anion of acid and cation of base don’t take part in the reaction and remain in the solution .These ions are called spectater ions.

Related questions

Description : Why a polystyrene cup is used instead of a glass beaker to find out heat of neutralization?

Last Answer : Ans: A polystyrene cup acts as an insulator therefore it will not allow heat to exchange between reaction mixture and its surroundings and enthalpy of reaction doesn’t change . On the other hand glass can easily transfer and exchange heat bringing change in enthalpy of reaction.

Description : What is the value of heat of neutralization when strong acid and base react?

Last Answer : Ans: The heat of neutralization is -57.32 kJ, when strong acid and base react.

Description : Why enthalpy of water in liquid state (25 C) is less than the enthalpy of steam (100 C)?

Last Answer : Ans: Enthalpy of water in liquid state is less than steam because the steam is at high temperature i.e;100 C, whereas that of liquid water is 25 C.

Description : On which factors heat content of a system depends?

Last Answer : Ans: Heat content (enthalpy of a reaction depends upon two factors I. Physical state of reactants II. Temperature

Description : Why in endothermic reaction we have to provide heat to the system?

Last Answer : Ans: In endothermic reactions the energy of the products is more than that of the reactants, so in order to form the product we have to provide energy to the system.

Description : What is the effect of endothermic and exothermic reactions on temperature of surroundings.

Last Answer : Ans: In endothermic reactions heat is absorbed from the surroundings resulting in decrease of temperature. Whereas heat is evolved in surrounding during exothermic reaction so temperature of surroundings increases.

Description : Define thermochemistry?

Last Answer : “The branch of chemistry in which we study the heat changes during chemical reactions is called ThermoChemistry”.

Description : A net ionic equation does NOT show: w) electronic charges x) solid products (precipitates) y) spectator ions z) reacting species

Last Answer : ANSWER: Y -- SPECTATOR IONS

Description : What are the spectator ions in the given balanced chemical equation CaCI2(aq) plus k2CO3(aq) CaCO3 (s) plus 2 KCI (aq)?

Last Answer : Need answer

Description : What are the spectator ions in the reaction 2KOH plus H2SO4 and gt2H2O plus K2SO4?

Last Answer : Need answer

Description : If you swallowed a frag grenade, how much closer could a spectator stand without dying?

Last Answer : 1. Most people can't swallow a frag grenade, and if it's stuck in someone's mouth, the cheek flesh isn't going to slow down the fragments much, so it would tend to be about the usual ... THE CASUALTY PRODUCING RADIUS OF THIS GRENADE IS 15 METERS, FRAGMENTS CAN DISPERSE AS FAR AWAY AS 230 METERS.

Description : Can someone explain spectator sports?

Last Answer : It’s a love of the game rather than just the team. Each game has a unique strategy. It is also watching people play at elite levels.

Description : Have you felt like a spectator of your own life?

Last Answer : Never like a spectator per se, but I have felt at the mercy of the powers that be. More like a feeling of drifting with a current. The current takes me where it wants and if I try to swim against it I’ll drown. These feelings are normally situational and pass.

Description : Are you a player or spectator?

Last Answer : I am a spectator and a player. I love watching baseball (basball junkie…watching WBC right now) and particpate in bowling. I also enjoy an occasional indoor soccer game.

Description : increased revenue in spectator sports has come from -General Knowledge

Last Answer : - gate receipts - broadcast contracts - stadium naming rights

Description : Pakistanis tortured Bengalis a lot. But UN did nothing then. What could be the reason ?

Last Answer : The United Nations has not been able to play an effective role in countering the violation of our basic human rights by Pakistanis. In fact, the five veto-wielding powers were limited to veto power on their own initiative outside the United Nations. So the UN was playing the role of a silent decade.

Description : Is spectator a noun or verb?

Last Answer : The word spectators is a noun, a plural, common noun for thesingular noun spectator. The verb form is spectate (spectates,spectating, spectated).

Description : What is the signifince of a kabuki performance to spectator?

Last Answer : Okuni's Kabuki was the first dramatic entertainment of any importance that was designed for the tastes of the common people in Japan.

Description : What is the biggest spectator sport in America?

Last Answer : It would be the Indianapolis 500, over 300,000 spectators in attendance for the event. Super Bowl

Description : If your principal indulges in corruption and forces you to co-operate, how would you make compromise with such a superior fellow? Options: A) You will not surrender to his wishes and open ... silent spectator D) You will change your attitude and think that single person cannot change the world

Last Answer : You will not surrender to his wishes and open the front to criticise him and gain support in your favour

Description : How are ions formed ?

Last Answer : Ions are formed due to positive or negative charge.

Description : (1) phenolate ions and methyl iodide

Last Answer : Acid Rain is caused due to pollution of atmosphere by – (1) Oxides of nitrogen and phosphorus (2) Oxides of carbon and nitrogen (3) Oxides of nitrogen and sulphur (4) None of these

Description : (3) Detergents give lather even with hard water Explanation: Soaps are made of materials found in nature. Detergents are synthetic a big drawback of washing with soap is that the minerals in water ... ions in hard water to create an insoluble residue that can clog drains and stick to clothing.

Last Answer : What is the objective of the 'Kyoto Protocol'? (1) To abolish child labour (2) To eliminate nuclear weapons (3) To increase ground water levels (4) To reduce greenhouse gases

Description : (3) Detergents give lather even with hard water Explanation: Soaps are made of materials found in nature. Detergents are synthetic. a big drawback of washing with soap is that the minerals in water ... ions in hard water to create an insoluble residue that can clog drains and stick to clothing.

Last Answer : Cement is usually a mixture of – (1) Calcium silicate and calcium alurninate (2) Calcium silicate and calcium ferrate (3) Calcium aluminate and calcium ferrate (4) Lime stone and silicon dioxide

Description : Chlorine atom and chloride ions - (1) Have an equal number of protons (2) Have an equal number of electrons (3) Unequal number neutrons (4) reacts spontaneously with water

Last Answer : (1) Have an equal number of protons

Description : Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution

Last Answer : (4) They are bad conductor of electricity in aqueous solution Explanation: Acids are good conductors of electric current in aqueous solution. When acids come in contact with water, they liberate OH ions, resulting in conduction of electricity.

Description : The two metal ions that cause hardness to water are: (1) Calcium, Magnesium (2) Sodium, Calcium (3) Sodium, Potassium (4) Sodium, Magnesium

Last Answer : (1) Calcium, Magnesium Explanation: Calcium and magnesium ion cause hardness of water.

Description : Which of the following molecules or ions involved in the Nitrogen Cycle do not contain oxygen atom? (1) Nitrite (2) Ammonia (3) Nitrate (4) Laughing gas

Last Answer : (2) Ammonia

Description : Acids generate: (1) Acids generate hydrogen ions. (2) Bases generate hydroxide ions. (3) Both are correct (4) Both are incorrect

Last Answer : (3) Both are correct Explanation: Acids, in presence of water, give hydrogen ions (H+). Similarly, bases generate hydroxide (OH-) ions in water.

Description : If there is one million Mg2+ ions in MgCl2, how many chloride ions are there? (1) Two million (2) One million (3) Half a million (4) Ten million

Last Answer : (1) Two million

Description : Which of the metallic ions is essential for blood clotting? (1) Na+ (2) Ca++ (3) K+ (4) Fe++

Last Answer : (2) Ca++ Explanation: Clotting also requires: calcium ions (Ca2+)(which is why blood banks use a chelating agent to bind the calcium in donated blood so the blood will not clot in the bag). about a dozen other protein clotting factors.

Description : Why are Ti+2 and other transition metals and their ions paramagnetic ?

Last Answer :  Ans: These ions have unpaired electrons in d- subshell. 

Description : (a) What happens when a Ferromagnetic or Ferrimagnetic solid is heated ?  (b) The ions of MgO and NaF all have the same number of electrons and intermolecular distance are about the same (235 & 215 pm). Why are the melting points are so different (2642 °C & 992 °C ?

Last Answer : (a) It changes into paramagnetic at hight temperature due to randomization of spins.  (b) The ions in MgO carry two unit charges. In NaCl only one unit charge. Hence electrostatic forces of attraction in MgO are stronger.

Description : What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the ... by reacting with the Cl2 and thereby activates it toward attack by benzene's π electrons.

Last Answer : It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Description : An aqueous solution of glycine is neutral because of the formation of : (a) Carbanion (b) Zwitterion (c) Carbonium ions (d) Free radicals

Last Answer : Zwitterion

Description : Ethers are stored in brown bottles. This is because on exposure to air and light ethers are converted to (a) Peroxides (b) Oxonium ions (c) Ozonides (d) Electrophiles

Last Answer : Peroxides

Description : The mechanism of dehydration of an alcohol to give an ether involves formation of : (a) Carbonium ions (b) Carbanions (c) Free radicals (d) Carbenes

Last Answer : Carbonium ions

Description : The mechanism of dehydration of an alcohol to give an alkene involves formation of : (a) Carbonium ions (b) Carbanions (c) Free radicals (d) Carbenes

Last Answer : Carbonium ions

Description : The order of stability of carbonium ions is (a) tertiary > secondary > primary (b) secondary > tertiary > primary (c) primary > secondary > tertiary (d) primary > tertiary > secondary

Last Answer : tertiary > secondary > primary

Description : Homolytic fission of covalent bond between carbon atoms will produce : (a) Two carbonium ions (b) Two molecules (c) Free radicals (d) Carbonium ion and carbanion

Last Answer : Free radicals

Description : Homolytic fission of C–C bond leads to the formation of : (a) Free radicals (b) Carbonium ions (c) Carbanions (d) None of these

Last Answer : Free radicals

Description : How could we prevent H+ ions to be discharged first than Na+ during electrolysis of aqueous solution of NaCl?

Last Answer : Ans: This could be prevented by using mercury cathode during this kind of electrolysis, because H+ ions need high voltage to be discharged at mercury cathode. In this way sodium got discharged at cathode despite H+ ions.

Description : Buffer solutions have constant acidity and alkalinity because: (1) they have fixed value of pH (2) these give unionised acid or base on reaction with added acid or alkali (3) acids and alkalies in these solutions are shielded from attack by other ions (4) they have large excess of H+ or OH– ions

Last Answer : these give unionised acid or base on reaction with added acid or alkali

Description : Which of the following terms denotes the polar molecules or negative ions clustered about a central positive ion? w) ligands x) isomers y) complex ions z) dipoles

Last Answer : ANSWER: W -- LIGAND

Description : The silver luster of the metals can be attributed to one of the following. It is attributed to their free w) protons x) ions y) neutrons z) electrons

Last Answer : ANSWER: Z -- ELECTRONS 

Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION

Description : The complete combustion of one mole of hydrogen produces: w) 1/2 mole H2O x) 1/2 mole H2O + 1/2 mole O3 y) 1 mole water z) 1 mole hydroxide ions

Last Answer : ANSWER: Y -- 1 MOLE WATER

Description : Which of the following molecules or ions is NOT formed when K metal reacts with liquid CH3OH? Is it: w) potassium ion x) hydrogen ion y) methoxy ion z) hydrogen molecule

Last Answer : ANSWER: X -- HYDROGEN ION

Description : The most common complex ions have octahedral geometry. What is the coordination number of the central ion in an octahedral complex?

Last Answer : ANSWER: SIX

Description : Which of the following atoms or ions would be the smallest? w) sodium atom x) magnesium atom y) singly charged sodium ion z) doubly charged magnesium ion

Last Answer : ANSWER: Z -- DOUBLY CHARGED MAGNESIUM ION