January 2019 1 197 Report
Diketahui reaksi:
N2 + 3 H2 ---> 2 NH3 DELTA H = -90 kJ
2 H2 + O2 ---> 2 H2O DELTA H = -560 kJ
4 NH3 + 5 O2 ---> 4 NO + 6 H2O
DELTA H = -1.140 kJ
Maka harga DELTA H reaksi: N2 + O2 ---> 2 NO adalah....
A. -180
B. +180
C. +245
D. -245
E. +138
(Dengan cara)
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