Chapter 6, Problem 6.97P

(a)

Interpretation Introduction

Interpretation:

The mass of $\text{AgI}$ formed when ${\text{AgNO}}_3$ reacted with $\text{NaI}$ is to be calculated.

Concept introduction:

A limiting reagent is the species that is completely consumed in a chemical reaction. The amount of product formed or reactant reacted in any chemical reaction has to be in accordance with the limiting reagent of the reaction.

(b)

Interpretation Introduction

Interpretation:

$\Delta H_{\text{rxn}}^{°}$ of the following reaction is to be determined.

${\text{Ag}}^{+}\left(aq\right)+{\mathrm{I}}^{-}\left(aq\right)\to \text{Ag}\mathrm{I}\left(s\right)$

Concept introduction:

The standard enthalpy of reaction is calculated by the summation of standard enthalpy of formation of the product minus the summation of standard enthalpy of formation of product at the standard conditions. The formula to calculate the standard enthalpy of reaction $\left(\Delta H_{\text{rxn}}^{°}\right)$ is as follows:

$\Delta H_{\text{rxn}}^{°}=\sum m\Delta H_{\text{f (products)}}^{°}-\sum m\Delta H_{\text{f (reactants)}}^{°}$

Here, m and n are the stoichiometric coefficients of reactants and product in the balanced chemical equation.

(c)

Interpretation Introduction

Interpretation:

$\Delta T_{\text{sol}}$ of $\text{AgI}$ is to determined

Concept introduction:

Heat capacity $\left(C\right)$ of a material is the quantity to measure the heat needed to raise the temperature of a substance by $1\text{K}$. The formula to calculate heat required is as follows:

$q=\left(C\right)\left(\Delta T\right)$ (5)

Here,

$\Delta T$ is the temperature difference.

$q$ is the heat released or absorbed.

$C$ is the heat capacity of the substance.

Specific heat capacity $\left(c\right)$ of a substance is the quantity to measure the heat needed to raise the temperature of $1\text{g}$ of a substance by $1\text{K}$. The formula to calculate heat required is as follows:

$q=\left(\text{mass}\right)\left(c\right)\left(\Delta T\right)$ (6)

Here,

$\Delta T$ is the temperature difference.

$q$ is the heat released or absorbed.

$c$ is the specific heat capacity of the substance.