Chapter 3, Problem 64E

(a)

Interpretation Introduction

Interpretation: The reaction ${\text{SiO}}_{\text{2}}\left(\text{s}\right)+\text{C}\left(\text{s}\right)\underset{\text{arc}\text{furnase}}{\overset{\text{Electric}}{\to }}{\text{Si}}_{\text{2}}\left(\text{s}\right)+\text{CO}\left(\text{g}\right)$ is to be balanced.

Concept introduction:As per law of mass conservation, the total reactant’s mass must always be equal to the product’s mass. In order to abide by this law, the equations are balanced. A balanced reaction implies that the atoms of every element on reactant’s side must definitely be equal atoms of every element on product’s side.

(b)

Interpretation Introduction

Interpretation: The reaction between silicon tetrachloride and magnesium producing silicon and magnesium chloride is to be balanced.

Concept introduction:As per law of mass conservation, the total reactant’s mass must always be equal to the product’s mass. In order to abide by this law, the equations are balanced. A balanced reaction implies that the atoms of every element on reactant’s side must definitely be equal atoms of every element on product’s side.

(c)

Interpretation Introduction

Interpretation: The reaction ${\text{Na}}_{\text{2}}{\text{SiF}}_{\text{6}}\left(\text{s}\right)+\text{Na}\left(\text{s}\right)\to \text{Si}\left(\text{s}\right)+\text{NaF}\left(\text{s}\right)$ is to be balanced.

Concept introduction:As per law of mass conservation, the total reactant’s mass must always be equal to the product’s mass. In order to abide by this law, the equations are balanced. A balanced reaction implies that the atoms of every element on reactant’s side must definitely be equal atoms of every element on product’s side.