Chapter 15, Problem 15.114P

(a)

Interpretation Introduction

Interpretation:

The missing products have to be predicted and the balanced equation has to be written for the decomposition and chlorination of diborane to boron trichloride.

Concept Introduction:

Decomposition reaction:

It is an elimination reaction.  When a saturated reactant becomes an unsaturated (presence of double bond) product, the reaction is said to be elimination reaction.  In elimination reaction, two products are formed from one reactant.

Chlorination:

The addition halogens to the organic compounds is said to be halogenation and the addition of chlorine atoms to the organic compound is said to be chlorination.

(b)

Interpretation Introduction

Interpretation:

The missing products has to be predicted and the balanced equation has to be written for the combustion of Pentaborane (${\text{B}}_{\text{5}}{\text{H}}_{\text{9}}$) in ${\text{O}}_{\text{2}}$.

Concept Introduction:

Combustion reaction:

When hydrocarbon reacts with oxygen to form carbon dioxide and water, the reaction is said to be combustion.

(c)

Interpretation Introduction

Interpretation:

The missing products has to be predicted and the balanced equation has to be written for the hydrolysis of trisilane (${\text{Si}}_{\text{3}}{\text{H}}_{\text{8}}$) to silica and ${\text{H}}_{\text{2}}$.

Concept Introduction:

Hydrolysis:

Addition of water molecule to the reactant to form the product is known as hydrolysis.

(d)

Interpretation Introduction

Interpretation:

The missing products has to be predicted and the balanced equation has to be written for the complete halogenation of disilane with ${\text{Cl}}_{\text{2}}$.

Concept Introduction:

Halogenation:

The addition halogens ($\text{F, Cl, Br and I}$) to the organic compounds is said to be halogenation.  The addition of chlorine atoms to the organic compound is said to be chlorination.

(e)

Interpretation Introduction

Interpretation:

The missing products have to be predicted and the balanced equation has to be written for the thermal decomposition of ${\text{H}}_{\text{2}}{\text{S}}_{\text{5}}$ to hydrogen sulfide and sulfur molecules.

Concept Introduction:

Thermal decomposition:

It is an elimination reaction which occurs in presence of light.  When a saturated reactant becomes an unsaturated (presence of double bond) product, the reaction is said to be elimination reaction.  In elimination reaction, two products are formed from one reactant.

(f)

Interpretation Introduction

Interpretation:

The missing products has to be predicted and the balanced equation has to be written for the hydrolysis of ${\text{PCl}}_{\text{5}}$.

Concept Introduction:

Hydrolysis:

Addition of water molecule to the reactant to form the product is known as hydrolysis.