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For the hypothetical reaction A(2)(g)+...

For the hypothetical reaction
`A_(2)(g)+B_(2)hArr2AB(g)`
`Delta_(r)G^(@)" and " Delta_(r)S^(@)" are "20kJ//mol and -20JK^(-1) mol^(-1)` respectively at 200 K.
If `Delta_(r)C_(p) " is " 20 JK^(-1)mol^(-1)" then " Delta_(r)H^(@)" at "400 K` is :

A

20 kJ/mol

B

7.98 kJ/mol

C

28 kJ/mol

D

16 kJ/mol

Text Solution

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The correct Answer is:
A
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