Chapter 4, Problem 96E

Interpretation Introduction

Interpretation:

The balanced chemical equation for the dissolution of gold in aquaregia is to be determined.

Concept introduction:

• Chemical equation is the representation of a chemical reaction, in which the reactants and products of the reactions are represented left and right side of an arrow respectively by using their respective chemical formulas.

Steps followed to balance a redox (reduction-oxidation) reaction occurs in acidic medium,

• Redox reacions can be sperated into two half-reactions, such as oxidation reaction and reduction reaction.
• Balancing of oxygen and hydrogen are carried out by adding water and ions in the half-reactions, and balance the number of elctrons then make the number of electrons in oxidation and reduction reactions equal by multiplying by integers.
• Club the both half-reactions.