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What is the pressure of 2 "moles" of NH(...

What is the pressure of `2 "moles"` of `NH_(3)` at `27^(@)C` when its voulume is `5 "litre"` in van der waals 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-(n^(2)a)/(V^(2)))(V-nb)=nRT`
`(P-((2)^(2)xx4.17)/((5)^(2)))(5-2xx.03711)`
`=2xx.0821xx300`
`P=(2xx.0821xx300)/(5-2xx0.3711)-(4.7xx2^(2))/(5^(2))`
`implies 10-0.66= 9.3 atm`
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