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24 November, 16:07

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? The pressure in A must be one-third the pressure in B. The pressure in A is three times the pressure in B. We can conclude nothing about the pressures. The pressures must be equal.

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  1. 24 November, 16:33
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    The pressure in A must be one-third the pressure in B

    Explanation:

    We shall apply gas law formula to solve the problem

    gas law formula is as follows

    P V / T = n R, P, V and T are pressure, volume and temperature of n mole of a gas.

    quantity of gas is same. That means n is same. R is universal constant so right hand side term is constant for gas in both the cylinders.

    For gas in cylinder A and B, this equation can be written in the following form

    Pa Va / Ta = Pb Vb / Tb

    Given, Va = 3 Vb

    Ta = Tb, temperature is same

    Putting these values in the equation above,

    Pa 3Vb / Tb = Pb Vb / Tb

    3 Pa = Pb

    Pa = 1/3 x Pb
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