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Q.

A closed container contains 2 moles of hydrogen gas. If 50% of hydrogen molecules are dissociated into atomic hydrogen, the molar specific at constant volume of the mixture will be

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a

9R2

b

2R

c

7R6

d

11R6

answer is D.

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Detailed Solution

After dissociation, the mixture contains 1 mole of diatomic molecules and 2 moles of mono-atomic molecules

∴   CV=n1 .CV1 +  n2CV2n1+n2=1.5R2+2.3R21+2=11R6

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A closed container contains 2 moles of hydrogen gas. If 50% of hydrogen molecules are dissociated into atomic hydrogen, the molar specific at constant volume of the mixture will be