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Chapter 4: Problem 11

The passage of electricity through an electrolyte solution is caused by the movement of (a) electrons only, (b) cations only, (c) anions only, (d) both cations and anions.

Short Answer

Expert verified
The passage of electricity through an electrolyte solution is caused by the movement of both cations and anions

Step by step solution

01

Understanding electrolyte solution

An electrolyte solution is a solution that conducts electricity. It contains dissolved ions. These ions are cations (positively charged ions) and anions (negatively charged ions). Electrolyte solutions can conduct electricity because of the movement of these ions.
02

Identifying key concepts

In the process of electrolysis, an electric current is passed through the electrolyte solution. This causes the cations and anions to move towards the electrodes of opposite charge. The cations move towards the cathode (negative electrode) and the anions move towards the anode (positive electrode). Thus, it is the movement of both cations and anions that allows for the passage of electricity through an electrolyte solution.
03

Answering the question

Given this information, it can be concluded that the statement (d) 'both cations and anions' is correct. That is, the passage of electricity through an electrolyte solution is caused by the movement of both cations and anions.

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Most popular questions from this chapter

Define solute, solvent, and solution by describing the process of dissolving a solid in a liquid.

Water is added to \(25.0 \mathrm{~mL}\) of a \(0.866 \mathrm{M} \mathrm{KNO}_{3}\) solution until the volume of the solution is exactly \(500 \mathrm{~mL}\). What is the concentration of the final solution?

(a) Without referring to Figure 4.10 , give the oxidation numbers of the alkali and alkaline earth metals in their compounds. (b) Give the highest oxidation numbers that the Groups \(3 \mathrm{~A}-7 \mathrm{~A}\) elements can have.

Hydrogen halides (HF, HCl, HBr, HI) are highly reactive compounds that have many industrial and laboratory uses. (a) In the laboratory, HF and HCl can be generated by reacting \(\mathrm{CaF}_{2}\) and \(\mathrm{NaCl}\) with concentrated sulfuric acid. Write appropriate equations for the reactions. (Hint: These are not redox reactions.) (b) Why is it that HBr and HI cannot be prepared similarly, that is, by reacting \(\mathrm{NaBr}\) and \(\mathrm{NaI}\) with concentrated sulfuric acid? (Hint: \(\mathrm{H}_{2} \mathrm{SO}_{4}\) is a stronger oxidizing agent than both \(\mathrm{Br}_{2}\) and \(\mathrm{I}_{2} .\) ) (c) \(\mathrm{HBr}\) can be prepared by reacting phosphorus tribromide \(\left(\mathrm{PBr}_{3}\right)\) with water. Write an equation for this reaction.

Distilled water must be used in the gravimetric analysis of chlorides. Why?
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