You are given the following two reaction...

You are given the following two reactions : `CH_(4(g))+2O_(2(g))rarrCO_(2(g))+2H_2O_((g))` `DeltaH=-890.4kJ`, `2HgO_((s)) rarr2Hg_((l)) +O_(2(g))` `DeltaH=+181.6kJ` Which one of the following statements is correct?

A

both reactions are exothermic.

B

both reactions are endothermic.

C

reaction (i) is endothermic and (ii) is exothermic

D

reaction (i) is exothermic and (ii) is endothermic

Verified by Experts

The correct Answer is:

D

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