Box 1 contains H_2(g) and Box 2 contains N_2(g). Both boxes arc held a, the same

Question

Box 1 contains H_2(g) and Box 2 contains N_2(g). Both boxes arc held a, the same constant temperature of 25 degree C. Which one of the following statements is true? (a) All the molecules in Box 1 travel at the same speed and this speed is greater than the speed of molecules in Box 2. (b) All the molecules in Box 1 travel at the same speed and this speed is less than the speed of molecules in Box 2. (c) All the molecules in Box 1 travel at the same speed and this speed is the same as the speed of molecules in Box 2. (d) The molecules in Box 1 travel at many different speeds and the average speed in Box 1 is greater than the average speed in Box 2. (e) The molecules in Box 1 travel at many different speeds and the average speed in Box 1 is less than the average speed in Box 2. (f) The molecules in Box 1 travel at many different speeds and the average speed in Box 1 is the same as the average speed in Box 2.

Explanation / Answer

average sppeed is inversely proportional to molar mass
since molar mass of H2 is less, average speed of molecule of H2 will be large

Also molecules have distributed energy. Somemay have same energy but not all

Answer: d

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