Chapter 4.3, Problem 4.6Q

(a)

Interpretation Introduction

Interpretation:

Whether the given reaction, ${\text{2Al(OH)}}_{\text{3(s)}}\stackrel{\Delta }{\to }{\text{ Al}}_{\text{2}}{\text{O}}_{\text{3(s)}}{\text{ + 3H}}_{\text{2}}{\text{O}}_{\text{(g)}}$ is a decomposition (D), combination (C), single-replacement (SR) or double-replacement (DR) reaction has to classified.

Concept Introduction:

Combination reaction (C) is a reaction in which two or more elements or compounds join together producing a product of different composition.  The general form of a combination reaction is $\text{A + B }\stackrel{}{\to }\text{ AB}$.

Decomposition reaction (D) is a reaction in which a single reactant undergoes decomposition and gives two or more products.  The general form of a decomposition reaction is $\text{AB }\stackrel{}{\to }\text{ A + B}$.

Single-replacement reaction (SR) is a reaction in which one atom replaces another in the compound and produces a new compound.  The general form of a single-replacement reaction is $\text{A + BC }\stackrel{}{\to }\text{ AC + B}$.

Double-replacement reaction (DR) is a reaction in which two compounds undergoes “change of partners”.  That is, two compounds react by exchanging atoms to produce two new compounds.  The general form of a double-replacement reaction is $\text{AB + CD }\stackrel{}{\to }\text{ AD + CB}$.

(b)

Interpretation Introduction

Interpretation:

Whether the given reaction, ${\text{Fe}}_{\text{2}}{\text{S}}_{\text{3(s)}}\stackrel{\Delta }{\to }{\text{ 2Fe}}_{\text{(s)}}{\text{ + 3S}}_{\text{(s)}}$ is a decomposition (D), combination (C), single-replacement (SR) or double-replacement (DR) reaction has to classified.

Concept Introduction:

Refer part (a)

(c)

Interpretation Introduction

Interpretation:

Whether the given reaction, ${\text{Na}}_{\text{2}}{\text{CO}}_{\text{3}}{}_{\text{(aq)}}{\text{ + BaCl}}_{\text{2(aq)}}\stackrel{}{\to }{\text{ BaCO}}_{\text{3(s)}}{\text{ + 2NaCl}}_{\text{(aq)}}$ is a decomposition (D), combination (C), single-replacement (SR) or double-replacement (DR) reaction has to classified.

Concept Introduction:

Refer part (a)

(d)

Interpretation Introduction

Interpretation:

Whether the given reaction, ${\text{C}}_{\text{(s)}}{\text{ + O}}_{\text{2(g)}}\stackrel{\Delta }{\to }{\text{ CO}}_{\text{2}}{}_{\text{(g)}}$ is a decomposition (D), combination (C), single-replacement (SR) or double-replacement (DR) reaction has to classified.

Concept Introduction:

Refer part (a)