Concept explainers
What is the ratio of diffusion rates for nitric oxide(NO) and nitrogen tetroxide
A. 0.326
B. 0.571
C. 1.751
D. 3.066

Interpretation:
Correct option must be chosen regarding the ratio of diffusion rate of NO and N2O4.
Concept introduction:
According to Graham’s gas diffusion law, rate of diffusion is inversely proportional to the square root of the molecular weight.
Answer to Problem 1STP
Correct answer: Option C is correct.
Explanation of Solution
Reason for correct option: Option C is correct because molecular weight of NO is 30 and that of N2O4 is 92.
Thus ratio of rate of diffusion of NO to N2O4
Reasons for incorrect options: From the calculations it can be seen that option A is incorrect as ratio of rate of diffusion of NO to N2O4 is not 0.326.
Option B is incorrect as ratio of rate of diffusion of NO to N2O4 is not 0.571.
Option D is incorrect as ratio of rate of diffusion of NO to N2O4 is not 3.066.
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