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Study the following two reactions: (i)...

Study the following two reactions:
(i) `CH_(4(g))+2 O_(2(g))to CO_(2(g))+2 H_2 O_((g)),
Delta H=-890.4 k J`
(ii) `2 Hg O_((s))to 2 Hg_((l))+O_(2(g)),
Delta H=+181.6 k J`
Which of the following statements is CORRECT?

A

Both of them are exothermic

B

Both of them are endothermic

C

I is exothermic and II is endothermic

D

I is endothermic and II is exothermic

Text Solution

Verified by Experts

The correct Answer is:
A
For exothermic reaction, `DeltaH = (-)` for endothermic reaction, `DeltaH = (+)`.
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