Chapter 3, Problem 70E

Interpretation Introduction

Interpretation:

The hydrate of ${\text{Na}}_{\text{2}}{\text{SO}}_{\text{2}}$ which consist of 50 % ${\text{H}}_{\text{2}}\text{O}$ by mass (exactly) should be determined without performing detailed calculations.

Concept introduction:

An ionic compound which is neutral in nature is known as salt.

The inorganic salt which contains particular number of water molecules crystallized with salt is known as hydrates.

The mass percent water in a hydrate complex is equal to the ratio of mass of water molecules to the total mass of the complex or salt and multiplies by 100. The mathematical expression is given by:

${\text{\%H}}_{\text{2}}\text{O = }\frac{\text{Mass of water molecules}}{\text{Total mass of complex}}\times 100$