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Chapter 7 Study Of Gas Laws | Number Problems

Question 21

A given amount of gas A is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 100 cm Hg.

(a) What is the temperature, when the pressure is 10 cm Hg

(b) What will be the pressure, when the chamber is brought to 100°C?

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a) V1 = V2 = V

P1 = 100 cmHg

T1 = 273 K

P2 = 10 cmHg

T2=?

P1V1/T1 = P2V2/T2

100 x V/273 = 10 x V/T2

b) V1 = V2 = V

P1 = 100 cmHg

P2= ?

T1 = 273 K

T2 = 373 K

P1V1/T1 = P2V2/T2

100 x V/273= P2 x V/373

P2 = 136.63 cm of Hg

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Question 21

A given amount of gas A is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 100 cm Hg.

(a) What is the temperature, when the pressure is 10 cm Hg

(b) What will be the pressure, when the chamber is brought to 100°C?

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

a) V1 = V2 = V

P1 = 100 cmHg

T1 = 273 K

P2 = 10 cmHg

T2=?

P1V1/T1 = P2V2/T2

100 x V/273 = 10 x V/T2

b) V1 = V2 = V

P1 = 100 cmHg

P2= ?

T1 = 273 K

T2 = 373 K

P1V1/T1 = P2V2/T2

100 x V/273= P2 x V/373

P2 = 136.63 cm of Hg

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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