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Consider the following reaction: H(2)...

Consider the following reaction:
`H_(2)O(l)rarrH_(2)O(g), " "DeltaH_(1)=44" kJ"`
`2CH_(3)OH(l)+3O_(2)(g)rarr4H_(2)O(l)+2CO_(2)(g)," "DeltaH_(2)=-1453" kJ"`
What is the value of `DeltaH` for second reaction if water vapour instead of liquid water is formed as product?

A

`-1409 kJ`

B

`-1629kJ`

C

`-1277kJ`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
`2CH_(3)OH(l)+3O_(2)to4H_(2)O(l)+2CO_(2)(g)+1453` ltbr. `underset(4xx44+4H_(2)Oto4H_(0)O)`
`2CH_(2)OH(l)+3O_(2)(g)to4H_(2)O(l)+2CO_(2)(g)+1277`
`DeltaH=-1277kJ`
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