   Chapter 20, Problem 22E

Chapter
Section
Textbook Problem

# Electrolysis of an alkaline earth metal chloride using a current of 5.00 A for 748 seconds deposits 0.471 g of metal at an electrode. Is the metal deposited at the cathode or the anode of the electrolytic cell? What is produced at the other electrode? What is the identity of the alkaline earth metal?

Interpretation Introduction

Interpretation:

The identity of alkaline earth metal should be identified.

Concept introduction:

Electrolytic deposition: The production of a metal from a solution containing its salts by the passage of an electric current through the solution.

Electrolytic cell: A device capable of either generating electrical energy from the chemical reactions or facilitating chemical reactions through the introduction of electrical energy.

Explanation

Given,

Current (I) = 5.0 ATime (t) = 748 seconds.Quality of electricity passed = I × tAmpere × sec = coulombQuality of electricity passed = (5.0 A) × 748 seconds.Quality of electricity passed = 3740 coulomb.

According to question, metal belong to the alkaline earth metal group and they are divalent cation

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