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How many moles of O(2) will be liberated...

How many moles of `O_(2)` will be liberated by one mole of `CrO_(5)` is the following reaction:
`CrO_(5) + H_(2) SO_(4) rarr Cr_(2) (SO_(4))_(5) + H_(2)O + O_(2)`

A

4.5

B

2.5

C

1.25

D

None

Text Solution

Verified by Experts

The correct Answer is:
D
Balance the equation:
`2CrO_(5) + 3H_(2) SO_(4) rarr Cr_(2) (SO_(4))_(3) + 3 H_(2) O + (7)/(2) O_(2)`
`2 "mol" CrO_(5) implies (7)/(2) "mol of" O_(2)`
`1 "mol" CrO_(5) implies (7)/(4) "mol of" O_(2)`
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