Two vessels A and B are of the same size and are at same temperature. A contains 1g of hydrogen and B contains 1g of oxygen. P(A) and P(B) are the pressures of the gases in A and B respectively, then P(A)/P(B) is :
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Question

Two vessels A and B are of the same size and are at same temperature. A contains 1g of hydrogen and B contains 1g of oxygen. P(A) and P(B) are the pressures of the gases in A and B respectively, then P(A)/P(B) is :

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G1 Physics · Accepted Answer

For an ideal gas, PV = nRT Given, V(A) = V(B) T(A) = T(B) Therefore, P(A)/P(B) = n(A)/n(B) For 1 g hydrogen, n(A) = 1/2 For 1 g oxygen, n(B) = 1/32 Hence, P(A)/P(B) = (1/2)/(1/32) = 16