Chapter 9, Problem 9.2P

Interpretation Introduction

(a)

Interpretation:

The given standard heat of combustion should be explained in words.

Concept introduction:

In standard heat of combustion, the reactant will be a hydrocarbon which reacts with oxygen and it forms carbon-di-oxide and water.

Interpretation Introduction

(b)

Interpretation:

It should be determined if the reaction is exothermic or endothermic. What should be done to maintain the temperature constant. Also, determine the state of the temperature if we ran the reactor adiabatically.

Concept introduction:

A system either absorbs heat or release heat to the surroundings. Exothermic reaction is the one where the heat gets released and endothermic reaction is the one where the heat gets absorbed. In exothermic, value of $\Delta H$ will be negative whereas in endothermic, value of $\Delta H$ will be positive.

Interpretation Introduction

(c)

Interpretation:

The required rate of heat input or output in kilowatts and the reactor pressure should be calculated.

Concept introduction:

In standard heat of combustion, the reactant will be a hydrocarbon which reacts with oxygen and it forms carbon-di-oxide and water.

Interpretation Introduction

(d)

Interpretation:

The difference between standard heat of combustion of vapor octane and to the liquid octane should be estimated

Concept introduction:

In standard heat of combustion, the reactant will be a hydrocarbon which reacts with oxygen and it forms carbon-di-oxide and water.

Interpretation Introduction

(e)

Interpretation:

Whether n-octane exists as a vapor at ${25}^{\circ }C$ and a pressure of 1 atm should be determined.

Concept introduction:

In standard heat of combustion, the reactant will be a hydrocarbon which reacts with oxygen and it forms carbon-di-oxide and water.