Question

A gas occupies 2 L volume at 745mm Hg.Calculate the additional pressure required to decrease the volume of gas to 1.5L .
Class 11​

Answer 1

Explanation:

use pv= nRt

here we first calculate the number of moles as it will will remain constant.

p= 745mm.........1 atm = 760mm

v = 2L...given

n = ?

R = 0.0821

T = 273 K

what you get the value of ' n ' put that in the formula

pv = nRT

where, p = ?

v = 1.5 L

n = that you found in above

R = 0.0821

T = 273K

and you get your answer....

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