At constant volume,for different diatomic gas | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) For a diatomic gas,the molar specific heat at constant volume is given by the formula $C_V = \frac{f}{2}R$,where $f$ is the degrees of freedom.For

Vedclass · Accepted Answer

Approximately equal and its value is $5 \, cal/mole/^{\circ}C$

Vedclass · Answer

(D) For a diatomic gas,the molar specific heat at constant volume is given by the formula $C_V = \frac{f}{2}R$,where $f$ is the degrees of freedom.For a diatomic gas at moderate temperatures,the degrees of freedom $f = 5$ ($3$ translational + $2$ rotational).Thus,$C_V = \frac{5}{2}R$.Using the value of the universal gas constant $R \approx 2 \, cal/mol \cdot K$,we get $C_V \approx \frac{5}{2} 	imes 2 = 5 \, cal/mol \cdot ^{\circ}C$.Since all diatomic gases have the same degrees of freedom at these temperatures,their molar specific heat at constant volume is approximately equal to $5 \, cal/mol \cdot ^{\circ}C$.

At constant volume,for different diatomic gases the molar specific heat is

Similar Questions

The ratio of the molar specific heat capacities of monatomic and diatomic gases at constant pressure is (in $: 7$)

The heat energy that must be supplied to $14 \ g$ of nitrogen at room temperature to raise its temperature by $48^{\circ} C$ at constant pressure is (Molecular weight of nitrogen $= 28, R =$ gas constant,$C_p = \frac{7}{2} R$ for diatomic gas). (in $R$)

An ideal mono-atomic gas of given mass is heated at constant pressure. In this process, the fraction of supplied heat energy used for the increase of the internal energy of the gas is

What is the molar heat capacity of water? ($R$ is the universal gas constant.)

The value of the gas constant $(R)$ calculated from the perfect gas equation is $8.32 \ J/mol \cdot K$,whereas its value calculated from the knowledge of $C_P$ and $C_V$ of the gas is $1.98 \ cal/mol \cdot K$. From this data,the value of $J$ is ......... $J/cal$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module