A. 150°C
B. 177°C
C. 75°C
D. 120°C

Correct Answer: Option B

B. 177°C

SEE ALSO  The heat of formation of ethene, C2H4 is 50 kJmol−1, and that of ethane, C2H6 is -82kJmol−1. Calculate the heat evolved in the process: C2H4 + H2 → C2H6

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