Question

1g of $H_2$ gas is heated by $1^{o}C$ at constant pressure. The amount of heat spent in expansion of gas is

• A. $\frac{4.155}{4.18}cal$
• B. $\frac{4.7}{2.1}cal$
• C. $\frac{6.8}{2.2}cal$
• D. $\frac{1.26}{1.7}cal$

Answer 1

The correct option is A $\frac{4.155}{4.18}cal$

The amount of heat spent in the process will be,
Q = $nR\Delta T$
Q = $\frac{1}{2}\times 8.314\times 1$ J
The same value in calorie will be, Q = $\frac{4.155}{4.185}$ cal