Chapter 3, Problem 100E

Interpretation Introduction

Interpretation:

The given question stated that ${\text{CuCl}}_2\cdot x{\text{H}}_2\text{O}$ is the formula of $\text{copper}\left(\text{II}\right)\text{chloride}$ . The mass of given sample is $3.41\text{g}$ before dehydration. The remaining sample after dehydration is $2.69\text{g}$ . The number of water of hydration in the hydrate is to be calculated.

Concept introduction: The molecular formula of an element defines the total number of atoms present in a molecule and the empirical formula of an element is defined as the simplest formula that expresses the percentage composition of the element. The number of moles is calculated by the formula,

$\text{n}=\frac{\text{m}}{{\text{M}}_{\text{w}}}$

To determine: The number of waters of hydration $\left(\text{x}\right)$ in hydrated $\text{copper}\left(\text{II}\right)\text{chloride}$ .