Chapter 3, Problem 63QRT

(a)

Interpretation Introduction

Interpretation:

The balanced equation for Iron reacts with oxygen to give iron(III) oxide has to be written.

Concept introduction:

Balancing reaction:

Balanced reaction is a chemical reaction in which number of atoms for each element in the reaction and the total charge are same on both reactant side and the product side.

Steps in balancing the information

• Step 1: Write the unbalanced equation
• Step 2: Find the coefficient to balance the equation.
• The coefficient should be reduced to the smallest whole number.

(b)

Interpretation Introduction

Interpretation:

Mass in grams of ${\text{Fe}}_{\text{2}}{\text{O}}_{\text{3}}$ has to be calculated.

Concept introduction:

Number of moles can be calculated by using following formula,

  $\text{No}\text{.of Moles = }\frac{\text{Mass}}{\text{Molar}\text{mass}}$

(c)

Interpretation Introduction

Interpretation:

Mass in grams of ${\text{O}}_2$ has to be calculated.

Concept introduction:

Refer to part (b)