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What is the pressure of 2 mole of NH(3) ...

What is the pressure of 2 mole of `NH_(3)` at `27^(@)C` when its volume is 5 lit. in Van der Waal's equation ? `(a = 4.17, b = 0.03711)`

A

10.33 atm

B

9.33 atm

C

9.74 atm

D

9.2 atm

Text Solution

Verified by Experts

The correct Answer is:
B
`(P+(an^(2))/(V))(V-nb)=nRT`
or `P=(nRT)/(V-nb)-(an^(2))/(V^(2))`
`=(2xx0.0821xx300)/(5-2xx0.03711)-(4.17xx2^(2))/(5^(2))`
`10-0.66=9.33" atm"`
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