Chapter 4, Problem 148AP

Interpretation Introduction

Interpretation:

The chemical equation for the neutralization reaction is to be represented and the purity of the sample in terms of percentage is to be calculated.

Concept introduction:

The number of moles of a reactant is calculated by the following formula:

$m=\frac{wt}{MW}$

Here, $m$ is the number of moles of the compound, $wt$ is the weight of the compound, and $MW$ is the molecular weight of the compound.

The concentration of a solution in terms of molarity is determined as follows:

$M=\left(m\right)\left(\frac{1}{V}\right)$

Here, $M$ is the concentration of the compound in molarity, $m$ is thenumber of moles of the compound, and $V$ is the volume of solution on litre containing the compound.

A chemical reaction always follows the law of conservation of mass, according to which when a chemical reaction occurs, the mass of atoms in products should be equal to the mass of atoms in reactants.

Mass percent is the way of representing the mass of an element in a compound or in a mixture. It can be determined as follows:

$m\%=\frac{m_c}{m_t}$

Here, $m\%$ is the mass of an element in percentage, $m_c$ is the mass of component, and $m_t$ is the total mass of mixture or compound in which the component is present.