A H2O(l)=H2(g)+1/2O2(g) ΔΗº=-285.58KJmol-1
B 1/2Cl2(g)=Cl(g) ΔΗº=+121.1 KJmol-1
C CH4(l)=CH3(g)+H2 ΔΗº=+427 KJmol-1
D 1/2H2(g)=H(g) ΔΗº=-218 KJmol-1
Correct Answer: Option B
Download our app for free and access thousands of MCQ questions with detailed solutions