What are cations?

What are cations?
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1 Answer

Answer :

Cations are atoms that have lost an electron to become positively charged.
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Description : Explain electro polishing.

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What is electro polishing?

Description : What is electro polishing?

Last Answer : Electro polishing is an electrochemical process that removes material from a metallic article. It is the reverse of electroplating.

What is the aim of electroplating?

Description : What is the aim of electroplating?

Last Answer : The aim of electroplating is to give the articles made of one metal a coating of another metal either to improve the appearance or to protect it against rusting and tarnishing.

What is electroplating?

Description : What is electroplating?

Last Answer : Electroplating is the process of plating one metal onto another by passing current through the electrolyte.

Mention the applications of electrolysis.

Description : Mention the applications of electrolysis.

Last Answer : a) Electroplating b) Electrotyping c) Purification of metals d) Decomposition of salts e) Electro polishing f) Manufacture of certain chemicals like caustic soda.

Write the value of Faraday’s constant.

Description : Write the value of Faraday’s constant.

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Define Faraday’s constant.

Description : Define Faraday’s constant.

Last Answer : Faraday’s constant is defined as the ratio of chemical equivalent to electrochemical equivalent of a substance.

State Faraday’s second law of electrolysis.

Description : State Faraday’s second law of electrolysis.

Last Answer : “The masses of different substances liberated by the same quantity of electricity are proportional to their chemical equivalents”.

On what factors does the amount of deposition in electrolysis depend?

Description : On what factors does the amount of deposition in electrolysis depend?

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State Faraday’s first law of electrolysis.

Description : State Faraday’s first law of electrolysis.

Last Answer : “The mass of substance deposited or collected at either electrode during electrolysis is proportional to the current and to the time”.

What are anions?

Description : What are anions?

Last Answer : Anions are a group of atoms that have gained electrons. They have a negative charge.

What are ions?

Description : What are ions?

Last Answer : A group of charged atoms are called ions.

State Arrhenius theory of dissociation.

Description : State Arrhenius theory of dissociation.

Last Answer : “The molecules of an electrolyte in aqueous solution break into ions”

What are non-electrolytes? Give example

Description : What are non-electrolytes? Give example

Last Answer : Substances which do not conduct electricity are called non-electrolytes. Ex: Sugar solution, distilled water etc.

What are weak electrolytes? Give example

Description : What are weak electrolytes? Give example

Last Answer : Electrolytes that dissociate partially are called weak electrolytes. Ex: Vinegar, carbonic acid, phosphoric acid and organic acids like acetic acid, formic acid etc.

What are strong electrolytes? Give example

Description : What are strong electrolytes? Give example

Last Answer : Electrolytes that dissociate almost completely are called strong electrolytes. Ex: Ionic compounds like Sodium chloride, copper sulphate, covalent compounds, hydrochloric acid, nitric acid, sulphuric acid.

How are electrolytes classified?

Description : How are electrolytes classified?

Last Answer : Electrolytes can be classified into: a) Strong electrolytes b) Weak electrolytes c) Non electrolytes

Give examples of substance through which electrolytic conduction occurs.

Description : Give examples of substance through which electrolytic conduction occurs.

Last Answer : a) Salts in molten state Ex: Sodium chloride, Calcium chloride, lead bromide etc. b) Aqueous solutions of sodium sulphate, copper sulphate etc. c) Bases Ex: Sodium hydroxide, Potassium hydroxide etc. d) Aqueous solutions of acids Ex: Hydrochloric acid, sulphuric acid etc.

Give examples of substances through which metallic conduction occur.

Description : Give examples of substances through which metallic conduction occur.

Last Answer : a) All metals Ex: Iron, Aluminium, Copper, Mercury etc. b) All alloys Ex: Brass, Bronze, and Steel etc. c) Graphite

State the types of conduction of electricity.

Description : State the types of conduction of electricity.

Last Answer : a) Metallic conduction b) Electrolytic conduction

What is an electrolyte?

Description : What is an electrolyte?

Last Answer : The chemical substances that conduct electricity in aqueous state or molten state are called electrolytes.

What is meant by electrolytic solutions?

Description : What is meant by electrolytic solutions?

Last Answer : The aqueous solutions in in which chemical reactions occur when direct current is passed are called electrolytic solutions.

What is electrolytic conduction?

Description : What is electrolytic conduction?

Last Answer : The type of conduction in which cations and anions participate in the flow of electricity in molten state or aqueous solution of salt is called as electrolytic conduction.

What is electronic conduction?

Description : What is electronic conduction?

Last Answer : The type of conduction which is due to the flow of delocalised electrons is known as electronic conduction.

Name the two types of electric conduction.

Description : Name the two types of electric conduction.

Last Answer : The two types of electrical conduction are: a) Electric conduction due to flow of delocalised electrons. b) Electrical conduction due to flow of ions

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Ionic compounds containing cations (+ve ion) and anions (-ve ion) are?

Description : Ionic compounds containing cations (+ve ion) and anions (-ve ion) are?

Last Answer : Salt

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Description : The five kingdoms of Whittaker’s classifi- cations are?

Last Answer : Kingdom Monera; Kingdom Protista; Kingdom  Fungi; Kingdom Plantae; Kingdom Animalia

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What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_(3)` II `overset(oplus)underset(CH_(

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Divalent cations are generally eliminated in marine fishes through

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In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as group reagents. Which of the following can be used instead of \( NH _{4} Cl \) ?(a) \( NaCl \)(b) \( \left( NH _{4}\right)_{2} SO _{4} \)(c) \( \left( NH _{4}\right)_{2} C _{2} O _{4} \)(d) \( NH _{4} NO _{3} \)

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What Members of which group of elements lose 2 electrons to form cations with a plus 2 charge?

Description : What Members of which group of elements lose 2 electrons to form cations with a plus 2 charge?

Last Answer : Need answer

Why can transition metals form cations with a variety of charges?

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Why can transition metals form cations with a variety of charges?

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Why do cations emit colors when heated in a Bunsen burner flame?

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A compound composed of cations and anions is called a?

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Anion gap is the difference in the plasma concentrations of (A) (Chloride) – (Bicarbonate) (B) (Sodium) – (Chloride) (C) (Sodium + Potassium) – (Chloride + Bicarbonate) (D) (Sum of cations) – (Sum of anions)

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Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

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Last Answer : (1) Isotopes Explanation: Atoms that have the same number of protons but different numbers of neutrons are called isotopes. For example, carbon-12, carbon13 and carbon-14 are three isotopes of the element ... has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.

Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations

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Explain why cations are smaller and anions are larger in size than their parent atom.

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Last Answer : Ans.The ionic radius of cation is always smaller than the parent atom because the loss of one or more electrons increases the effective nuclear charge. As a result, the force of attraction of ... the force of attraction of the nucleus for the electrons decreases and hence the ionic radii increases.

Negatively charged ions are called a. anions b. cations c. both d. none of them

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Positively charged ions are called a. anions b. cations c. both d. none of them

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Active and passive transports across cell membrane differ in (a) passive transport is nonselective(b) passive transport is along the concentration gradient while active transport is due to metabolic energy (c) active transport is more rapid (d) passive transport is confined to anions while active transport is confined to cations.

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Zeolite is a/an (A) Naturally occuring clay which is capable of exchanging cations (B) Abrasive material (C) Catalyst used in shift conversion (D) None of these

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Very strongly acidic cations have pKa values -------. a.between11.5 – 14.0 b. between6.0-11.5 c. between1.0-6.0 d. below -4.0

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Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B Elements of Group 16 occur as cations in ionic compounds. C Oxides of elements in Groups 16 and 17 are basic. D The halogens (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

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