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Given chemical equations for these react...

Given chemical equations for these reactions
`S(s)+O_(2)(g)toSO_(2)(g)DeltaH=-29608KJxxmol^(-1)`
`H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)Delta=-285.8KJxxmol^(-1)`
`H_(2)(g)+S(s)toH_(2)S(g)DeltaH=-20.6Kjxxmol^(-1)`
What is the value of `DeltaH` for the reaction below?
`2H_(2)s(g)+3O_(2)(g)to 2H_(2)O(l)+2SO_(2)(g)`

A

`-603.2KJxxmol^(-1)`

B

`-562.0KJxx,mol^(-1)`

C

`-1206.4KJxxmol^(-1)`

D

`-1124.0 Kjxxmol^(-1)`

Text Solution

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The correct Answer is:
d
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The enthalpy of the reaction H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(g) is DeltaH_(1) and that of H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l) is DeltaH_(2) . Then

H_(2)O(g)+(1)/(2)O_(2)(g)toH_(2)O(g)," "DeltaH=x H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)," "DeltaH=y heat of vaporization of water is:

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