A) 70960 calories
B) 71030 calories
C) ? 70 calories
D) + 70 calories
Correct Answer: C
Solution :
S (rhombic) \[+\,{{O}_{2}}\to S{{O}_{2}}\] , \[\Delta H=70960\,cal.\] ?(i) S (monoclinic) \[+\,{{O}_{2}}\to S{{O}_{2}}\]\[\Delta H=71030\,cal\] ?(ii) Aim: S (rhombic) \[\to \] S (monoclinic) eq. (i) ? eq. (ii) gives the required result.
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