Q. Which is the heat of formation of $NO$ :
Given $N_{2} + O_{2} \to 2 NO - 24 k c a l$

202 172 NTA AbhyasNTA Abhyas 2022 Report Error

A

$- 12 k c a l / m o l$

B

$- 24 k c a l / m o l$

C

$12 k c a l / m o l$

D

$24 k c a l / m o l$

Solution:

$△ H_{f} = \frac{24}{2} = 12 k c a l / m o l$