Two cylinders a and b at the same temperature contain the same quantity of the same kind of gas. cylinder a has three times the volume of cylinder b. what can you conclude about the pressures the gases exert? show all workings. [15 marks] a. b. c. d. the density of gas in a and b are the same. the pressure in a is three times the pressure in b. the pressures in a and b must be equal. the pressure in a must be one-third the pressure in b.

so pressure in A must be one third the pressure in B

Explanation:

We shall apply gas law to the cylinders A and B . Since their quantity are same so their no of  mole will also be same .

For cylinder A

Temperature T , volume 3V , pressure  P₁ , no of mole = n

so

P₁ X 3V = n R T

For cylinder B

Temperature T , volume V , pressure  P₂ ,no of  mole = n

so

P₂ X V = n R T

From the two equation above

P₁ X 3V = P₂ X V

P₁ = P₂ / 3

so pressure in A must be one third the pressure in B

measuring things 1 litre of water

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