Question

The pressure on a 250 ml gas sample is increased from 450 mmHg to STP,what is the new volume? ​

Answer 1

Answer:

V₂  = 150 mL

Explanation:

Given data:

Initial volume of sample = 250 mL

Initial pressure = 450 mmHg (450 /760 = 0.6 atm)

Final pressure = standard = 1 atm

Final volume = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

0.6 atm  × 250 mL = 1 atm × V₂

150 atm. mL = 1 atm × V₂

V₂  = 150 atm. mL/ 1 atm

V₂  = 150 mL