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If x(1),x(2) and x(3) are enthalpies of ...

If `x_(1),x_(2) and x_(3)` are enthalpies of H-H , O=O and O-H bonds respectively , and `x_(4)` is the enthalpy of vaporisation of water , estimate the standard enthalpy of combustion of hydrogen:

A

`x_(1)+(x_(2))/(2)-2x_(3)+x_(4)`

B

`x_(1)+(x_(2))/(2)-2x_(3)-x_(4)`

C

`x_(1)+(x_(2))/(2)-x_(3)+x_(4)`

D

`2x_(3)-x_(1)-(x_(2))/(2)-x_(4)`

Text Solution

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The correct Answer is:
B
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