Chapter 4, Problem 126CP

Interpretation Introduction

Interpretation:

Among the given equations, the equation which describes the reaction that takes place should be explained.

  $\text{copper(II) sulfate(aq) + iron(s)}\to \text{copper(s) + iron(II) sulfate(aq)}$

  $\text{copper(II) sulfate(aq) + iron(s)}\to \text{copper(s) + iron(III) sulfate(aq)}$

Concept Introduction:

Mole is SI unit which is used to measure the quantity of the substance. It is the quantity of a substance which contains same number of atoms as present in accurately 12.00 g of carbon-12 is known as mole.

Number of moles of a compound is defined as the ratio of given mass of the compound to the molar or molecular mass of the compound.

The mathematical expression is given by:

Number of moles = $\frac{\text{ mass of the compound}}{\text{molar mass of the compound}}$