Question

Calculate Co for air, given that C =0.162 cal/g/K and density
of air at N.T.P. is 0.001293 g/cm².​

Answer 1

Calculate C p for air, given that C v =0.162 cal g -1 k -1 and density air at N.T. P is 0.001293 g|cm 3?

Answer 2

Answer:

$\sf C_P =0.230 \ cal/ g \ K$

Explanation:

Given :

$\sf C_V=0.162 \ cal/g \ K$

$\sf \rho=0.001293 \ g/cm^3$

We are asked to find $\sf C_P \ ?$

We know :

$\sf C_P -C_V=\dfrac{R/n}{J} =\dfrac{r}{J} =\dfrac{PV}{TJ} =\dfrac{P(1/ \rho)}{TJ}$

$\sf C_P =C_V+\dfrac{P/ \rho}{TJ}$

Putting values here we get :

$\sf C_P =0.162+\dfrac{1.013\times10^6}{0.001293\times273\times4.2\times10^7}$

$\sf C_P =0.162+0.068 \ cal/g \ K$

$\sf C_P =0.230 \ cal/ g \ K$

Therefore , we get required answer.