KCET 2016 Chemistry Solved Paper

Question : 26 of 60

Marks: +1, -0

If the bond energies of H-H, Br-Br and H-Br are 433, 192 and 364‌kJ‌mol−1 respectively, then ΔH° for the reaction :
H2(g)+Br2(g)→2HBr(g)