questions for revision

Question 1

what are the assumptions of the kinetic model of gas

Answer 1

• gas contains large number of particles
• collisions are elastic
• negligible attractive forces except during collisions
• particles move rapidly and randomly

Question 2

boyles law

Answer 2

At a constant temperature volume of a fixed mass is inversely proportional to the pressure exerted on the gas

PV= constant under constant temperature
P1V1=P2V2

Question 3

Charles law

Answer 3

at constant pressure, volume of a gas is directly proportional to its absolute temperature

Question 4

pressure temperature law

Answer 4

at constant volume pressure of a gas is directly proportional to its absolute temperature

Question 5

PV=nRT- ideal gas equation

Answer 5

pressure x volume = no of moles x molar gas constant x temperature

-USED WHEN MOLES ARE IN QUESTION

Question 6

PV=NKT

Answer 6

pressure x volume = no of atoms/molecules x Boltzmann constant x temperature

-USED WHEN ATOMS AND MOLECULES ARE IN QUESTION

Question 7

what do you need to use when dealing with gas questions?

Answer 7

ALWAYS CONVERT TO KELVIN!!!!!!!!!

Question 8

ideal gas equation hidden formula

Answer 8

p1v1/t1=p2v2/t2