Chapter 7, Problem 7.19P

Interpretation Introduction

(a)

Interpretation:

The given item of information which suggests that the chamber may be considered adiabatic is to be predicted.

Concept introduction:

The thermocouple potentiometer consists of two metals. These metals are joined together at different temperatures and forms two junctions. It measures the amount of voltage flowing through the circuit.

Interpretation Introduction

(b)

Interpretation:

The energy balance for the gas in the chamber is to be predicted. The value of $\hat{U}\left(\text{J/mol}\right)$ at each of the observed temperatures is to be calculated. The solution is to be expressed as a table of $\hat{U}$ versus $T$.

Concept introduction:

The thermocouple potentiometer consists of two metals. These metals are joined together at different temperatures and forms two junctions. It measures the amount of voltage flowing through the circuit.

Interpretation Introduction

(c)

Interpretation:

The purpose of the stirrer is to be stated.

Concept introduction:

The thermocouple potentiometer consists of two metals. These metals are joined together at different temperatures and forms two junctions. It measures the amount of voltage flowing through the circuit.

Interpretation Introduction

(d)

Interpretation:

The fate of $0.14\text{W}$ of power that does not go to raise the temperature of the gas is to be predicted.

Concept introduction:

The resistance is a physical property of a conductor. It resists the flow of current. There is an inverse relationship between the resistance and the current. Higher the value of a resistance, lower is the value of current. Current and power are directly proportional to each other. Lower the value of current, the lower is the power given by the battery.

Interpretation Introduction

(e)

Interpretation:

The statement that the calculated values of $U$ does not precisely correspond to the values at the calculated temperatures and $1$ atm is to be justified and basis of the justification is to be stated. The several ways to provide the quantitative validation of the statement are to be suggested.

Concept introduction:

The ideal gas law of a gas is represented by the formula,

$PV=nRT$

Here,

• $P$ is pressure.
• $R$ is gas constant.
• $V$ is volume.
• $T$ is temperature.
• $n$ is the number of moles of a gas.