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The heat of formation of the compound in...

The heat of formation of the compound in the following reaction is
`H_(2)(g)+Cl_(2)(g)to2HCl(g)+44kcal`

A

`22.0`

B

`-44.0`

C

`-22.0`

D

`+44.0`

Text Solution

Verified by Experts

The correct Answer is:
C
Formation reaction of HCl is
`(1)/(2)H_(2(g))+(1)/(2) Cl_(2(g)) rarr HCl_((g))`
`therefore Delta H_(f)=(1)/(2) xx Delta H=(-44)/(2)`
`Delta H_(f)=-22` kcals
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