Question

gas is allowed to expand at a constant temperature from an initial volume of 300 ml to the final volume of 1800 ml. At the end of the expansion the pressure of the gas was found to be 1 atm. What was the initial pressure of the gas?

Answer 1

Answer:

Answer:

• Initial pressure of a gas,P1=6 atm.

Given:

• Initial volume of a gas V1=300ml
• Final volume of a gas,V2=1800ml
• Final pressure of a gas,P2=1 atm

To find:

• Initial pressure of a gas,P1=?

Solution:

As we know that,

From the ideal gas equation,

PV=nRT

From this,

P is inversely proportional to the volume at constant temperature.

Now,

P1V1=P2V2

P1×300ml=1×1800ml

P1=1800/300

P1=6 atm

Hence, The initial pressure of a gas is 6atm.

Explanation:

Hope it helps you......

Answer 2

Answer:

P₁ = 6 atmospheres.

Explanation:

Given :-

Initial volume of the gas (V₁) = 300 ml

Final volume of the gas (V₂) = 1800 ml

Final pressure of the gas (P₂) = 1 atm

To find :-

Initial pressure of the gas (P₁)

Solution :-

Using Boyles law :

P₁V₁ = P₂V₂

P₁ × 300 = 1 × 1800

300 P₁ = 1800

P₁ = 1800/300

P₁ = 6

∴ Initial pressure of the gas (P₁) was 6 atmospheres.