Chapter 7, Problem 7.29AP

(a)

Interpretation Introduction

Interpretation:

The balanced equation for the combustion of glucose is to be determined.

Concept Introduction:

Chemical equation is the representation of a chemical reaction, in which the reactants and products of the reactions are represented left and right side of an arrow respectively by using their respective chemical formulas.

Combustion is the process of burning of a compound; in which the compound reacts with excess of oxygen.

(b)

Interpretation Introduction

Interpretation:

The energy released during the combustion of $1.50mol$ of glucose in $kcal$ and $kJ$ to be determined.

Concept Introduction:

Enthalpy $\left(H\right)$: it is the total amount of heat in a particular system.

The value of heat formed in a reaction $\text{ΔH}$ is calculated by the formula,

$\text{ΔH=}{{\displaystyle \sum \left(BondDissociationEnergy\right)}}_{\left(\text{reactants}\right)}-{{\displaystyle \sum \left(BondDissociationEnergy\right)}}_{\left(\text{products}\right)}$

If the value obtained for $\text{ΔH}$ in a reaction is positive then it is an endothermic reaction whereas the value obtained for $\text{ΔH}$ is negative it is an exothermic reaction.

Combustion is the process of burning of a compound; in which the compound reacts with excess of oxygen.

From its given mass is,

$\text{Number of moles}\text{=}\frac{\text{Given}\text{mass}}{\text{Molecular}\text{mass}}$

(c)

Interpretation Introduction

Interpretation:

The energy absorbed by plant to produce $15.0g$ of glucose in $kJ$ is to be determined.

Concept Introduction:

Enthalpy $\left(H\right)$: it is the total amount of heat in a particular system.

The value of heat formed in a reaction $\text{ΔH}$ is calculated by the formula,

$\text{ΔH=}{{\displaystyle \sum \left(BondDissociationEnergy\right)}}_{\left(\text{reactants}\right)}-{{\displaystyle \sum \left(BondDissociationEnergy\right)}}_{\left(\text{products}\right)}$

If the value obtained for $\text{ΔH}$ in a reaction is positive then it is an endothermic reaction whereas the value obtained for $\text{ΔH}$ is negative it is an exothermic reaction.

Combustion is the process of burning of a compound; in which the compound reacts with excess of oxygen.