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When hydrogen gas is burnt in chlorine 2...

When hydrogen gas is burnt in chlorine 2000 cals of heat is librated during the formation of 3.65 g of `HCl, Delta H` of formation of `HCl` is

A

2 K.cal

B

`-20` K.cal

C

`+20` K.cal

D

`-2` K.cal

Text Solution

Verified by Experts

The correct Answer is:
B
`1/2 H_(2)+1/2 Cl_(2) rarr HCl`
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