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Heat of formation of CH(4) are: If giv...

Heat of formation of `CH_(4)` are:
If given heat:
`C(s)+ O_(2)(g) rarr CO_(2) (g) " "DeltaH =-394 KJ`
`2H_(2) (g)+ O_(2)(g) rarr 2H_(2)O(l) rarr 2H_(2)O(l) " "DeltaH =-394 KJ`
`CH_(4)(g) + 2O_(2)(g) rarr CO_(2)(g) + 2H_(2)O(l) " " DeltaH =- 394 KJ`

A

`-70 KJ`

B

`-16.7 Kcal`

C

`-244 KJ`

D

`-50 Kcal`

Text Solution

Verified by Experts

The correct Answer is:
A, B
`(1) + (2)-(3)`
`DeltaH_("reaction") =-394 -568+892=-70 KJ`
`" "=-16.607Kcal.`
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