Question

An enclosed gas at a constant temperature, occupies 75 litres, at a pressure of 700 mm of mercury. Find the pressure of gas, if its volume increases to 100 litres at the same temperature

Answer 1

Explanation:

this question can be solved on the equation

P1/V1 =P2/V2

so putting the values

P1 =700mm hg

P2=?

V1=75lit

V2=100 lit

so

700/75=P2/100

so by cross multiplying it we get

700*100=P2*75

700*100/75=P2

so P2 =933.3....mmhg

Answer 2

Answer:

525mm of Hg

Explanation:

initial volume of gas(v1)=75litres

initial pressure of gas(p1)=700mm of Hg

final volume of gas(v2)=100 litres

final pressure of gas(p2)=?

by Boyle's law=p1v1 =p2v2

700×75 =p2×100

p2=700×75/100

525mm of Hg