Chapter 20, Problem 19QAP

Interpretation Introduction

(a)

Interpretation:

The balanced chemical equation for the reaction where chromate ions react with strong acid should be determined.

Concept introduction:

A balanced chemical reaction equation is the one in which the number of atoms of all the elements are equal on both the sides of the chemical equation.

Interpretation Introduction

(b)

Interpretation:

The balanced chemical equation for the reaction where the oxidation of water to oxygen takes place in the presence of permanganate ions in basic solution should be determined.

Concept introduction:

A balanced chemical reaction equation is the one in which the number of atoms of all the elements are equal on both the sides of the chemical equation. An oxidizing agent is the one which has the tendency to oxidize others and itself gets reduced in a chemical reaction.

Interpretation Introduction

(c)

Interpretation:

The balanced half reaction equation for reduction of chromate ion to chromium (III) hydroxide in basic solutions should be determined.

Concept introduction:

A balanced chemical reaction equation is the one in which the number of atoms of all the elements are equal on both the sides of the chemical equation. Reduction of a chemical species is said to occur when the oxidation state of the species undergoing reduction decreases due to gain of electrons.