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At STP, a container has 1 mole of Ar, 2 ...

At STP, a container has 1 mole of Ar, 2 mole of `CO_(2)`, 3 moles of `O_(2)` and 4 moles of `N_(2)`. Without changing the total pressure if one mole of `O_(2)` is removed, the partial pressure of `O_(2)`

A

is changed by about 26%

B

is halved

C

is unchanged

D

changed by 33%

Text Solution

Verified by Experts

The correct Answer is:
A
`P_(i) = P_(f) rArr (10RT)/(V_(i)) = (9RT)/(V_(f)) rArr V_(f) = (9V_(i))/(10)`
`P_(O_(2i)) = (3RT)/(V_(i)) and P_(O_(2f)) = (2RT)/(V_(f)) rArr (P_(O_(2i)) - P_(O_(2f)))/(P_(O_(2i))) = (3 - (20)/(9))/(3) = 26%`
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