Question

When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increased the internal energy of the gas is:

• A. $\frac{2}{5}$
• B. $\frac{3}{5}$
• C. $\frac{3}{7}$
• D. $\frac{5}{7}$

Answer 1

The correct option is D $\frac{5}{7}$

$f=\frac{△U}{△Q}=\frac{n{C}_v△T}{n{C}_p△T}=\frac{C_v}{C_p}=\frac{1}{\delta }$

$f=\frac{5}{7}$