What is ΔHrxn for the reaction below? I thought the answer was -109 kJ but it was wrong.

N2(g)+3H2(g)→2NH3(g)

1 Answer
anor277
Jan 13, 2018

Well where are your data....?

Explanation:

We gots...#N_2(g) + 3H_2(g) rarr 2NH_3(g)#

This site quotes #DeltaH_f^@(NH_3)=-45.9*kJ*mol^-1#...but because this value specifies the enthalpy with respect to the formation of one mole of ammonia....

#DeltaH_"given reaction"^@=-91.8*kJ*mol^-1#

Related questions
Impact of this question
1540 views around the world
You can reuse this answer
Creative Commons License