Q. The enthalpy of combustion of methane at $2 5^{\circ} C$ is $890 k J$ . The heat liberated when $3.2 g$ of methane is burnt in air is:

1760 189 KCETKCET 2004 Report Error

A

- 890 kJ

24%

B

178 kJ

56%

C

445 kJ

13%

D

278 kJ

7%

Solution:

Correct answer is (b) 178 kJ