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Which of the following option(s) will sh...

Which of the following option(s) will show a decrease in Gibbs free energy ?

A

Combustion of propane at 1 bar and 500 K.

B

Vapourisation of any liquild at 1 atm and above its normal bolling point.

C

Fusion of `H_(2)O` at 1 atm and `0^(@)C` if its normal melting point is `0^(@)`C.

D

Vapourisation of `H_(2)O` at `100^(@) C`and 1 bar if its normal boling ponts is `100^(@)C`.

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The correct Answer is:
a,b,d
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