Question

For the reaction, \[\ce{N_{2(g)} + 3H_{2(g)} -> 2NH_{3(g)}}\], ΔH is equal to ______.

पर्याय

• ΔU - RT

• ΔU + 2RT

• ΔU + RT

• ΔU - 2RT

Answer 1

For the reaction, \[\ce{N_{2(g)} + 3H_{2(g)} -> 2NH_{3(g)}}\], ΔH is equal to ΔU - 2RT.

Explanation:

\[\ce{N_{2(g)} + 3H_{2(g)} -> 2NH_{3(g)}}\]

∴ Δn = 2 - 4 = - 2

∴ ΔH = ΔU + Δn RT = ΔU - 2RT