Molar specific heat of oxygen at constant pre | vedclass

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

Question

(C) Given: $C_p = 7.2 \, cal/mol \cdot K$,$R = 8.3 \, J/mol \cdot K$. Since $1 \, cal \approx 4.18 \, J$,we convert $R$ to $cal$: $R = 8.3 / 4.18 \app

Vedclass · Accepted Answer

$250$

Vedclass · Answer

(C) Given: $C_p = 7.2 \, cal/mol \cdot K$,$R = 8.3 \, J/mol \cdot K$. Since $1 \, cal \approx 4.18 \, J$,we convert $R$ to $cal$: $R = 8.3 / 4.18 \approx 2 \, cal/mol \cdot K$.Molar heat capacity at constant volume is given by $C_v = C_p - R$.$C_v = 7.2 - 2 = 5.2 \, cal/mol \cdot K \approx 5 \, cal/mol \cdot K$.Number of moles $n = 5 \, mol$.Change in temperature $\Delta T = 20^\circ C - 10^\circ C = 10 \, K$.The heat required at constant volume is $\Delta Q = n C_v \Delta T$.$\Delta Q = 5 	imes 5 	imes 10 = 250 \, cal$.

Molar specific heat of oxygen at constant pressure $C_p = 7.2 \, cal/mol \cdot ^\circ C$ and $R = 8.3 \, J/mol \cdot K$. At constant volume,$5 \, mol$ of oxygen is heated from $10^\circ C$ to $20^\circ C$. The quantity of heat required is approximately ........ $cal$.

Similar Questions

The amount of heat that must be supplied to $35 \ g$ of oxygen at room temperature to raise its temperature by $80^{\circ} C$ at constant volume is (molecular mass of oxygen is $32$ and $R = 8.3 \ J \ mol^{-1} \ K^{-1}$) (in $kJ$)

For a monoatomic gas,the work done at constant pressure is $W$. For the same rise in temperature of the gas,the heat supplied at constant volume is:

For an ideal non-rigid diatomic gas,the value of $\frac{R}{C_V}$ is nearly,given that $\gamma = \frac{C_P}{C_V} = \frac{9}{7}$.

If $C_p$ and $C_v$ are molar specific heats of an ideal gas at constant pressure and volume respectively,if $\gamma$ is the ratio of the two specific heats and $R$ is the universal gas constant,then $C_p$ is equal to

The molar specific heat at constant pressure for a monoatomic gas is

Vedclass Test Series

Exam Paper Generator

Online Exam Module