If NO and NH₃ are allowed to effuse through a porous membrane under identical conditions,the rate of effusion for NH₃ will be ________ times that of NO. A)0)57 B)0)75 C)1)3 D)1)8

Question

Quizplus · Accepted Answer

The rate of effusion is inversely proportional to the square root of the molar mass. In this case, the molar mass of NO is lower than NH₃. So, the rate of effusion of NH₃ will be higher than NO. The ratio of their rates of effusion will be given by the ratio of their square roots of their molar masses. Ratio = sqrt (molar mass of NO) / sqrt (molar mass of NH₃) Ratio = sqrt(159.85) / sqrt(207.23) Ratio = 3.99 / 4.56 Ratio = 0.875 Therefore, the rate of effusion for NH₃ will be 0.875 times that of NO. But, the question is asking for the ratio of the rate of effusion of NH₃ to NO. So, we need to take the reciprocal of the ratio we calculated. Reciprocal of 0.875 = 1.14 Therefore, the rate of effusion for NH₃ will be 1.14 times that of NO, which is approximately 1.3 times. So, the best choice is C) 1.3.

If NO and NH3 Are Allowed to Effuse Through

If NO and NH₃ Are Allowed to Effuse Through