Home
Class 12
CHEMISTRY
At a certain temperature the time requir...

At a certain temperature the time required for the complete diffusion of 200 mL of `H_(2)` gas is 30 minutes. The time required for the complete diffusion of 50 mL of `O_(2)` gas at the same temperature will be

A

60 minutes

B

30 minutes

C

45 minutes

D

15 minutes.

Text Solution

Verified by Experts

According to Graham.s law of diffusion or effusion.
Rate of diffusion of a gas (r)
`=("Volume of the gas diffused"(V))/("Time taken for the diffusion"(t))`
Now according to Graham.s law.
`r prop 1/(sqrt("Molecular mass of the gas"))` i.e. `r prop 1/(sqrt(M))`
Now `(r_(H_(2)))/(r_(O_(2)))sqrt((M_(O_(2)))/(M_(H_(2))))implies(200//30)/(50//t)=sqrt(32/2)`
Where t is the time taken for diffusion of 50 mL of `O_(2)` gas.
`implies200/30xx5/50=4impliest=30` min
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER (SOLIDS, LIQUIDS AND GASES)

    MTG-WBJEE|Exercise WB JEE Previous Years Questions (Category 2: Single Option Correct Type)|3 Videos

  • STATES OF MATTER (SOLIDS, LIQUIDS AND GASES)

    MTG-WBJEE|Exercise WB JEE Previous Years Questions (CATEGORY 3; ONE OR MORE THAN ONE OPTION CORRECT TYPE(|1 Videos

  • STATES OF MATTER (SOLIDS, LIQUIDS AND GASES)

    MTG-WBJEE|Exercise WBJEE/WORKOUT (Category 3: One or More than one Option Correct Type)|9 Videos

  • REDOX EQUILIBRIA

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS|5 Videos

  • SURFACE CHEMISTRY

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS|3 Videos

Similar Questions

Explore conceptually related problems

20% first order reaction is completed in "50" minutes.Time required for the completion of 60% of the reaction is

A First order reaction is 50% complete in 69.3 minutes. Time required for 90% completion for the same reaction is

A first order reaction is 40% completed in 50 minutes. What is the time required for 90% of the reaction to complete?

A gas occupies a volume of 250 mL at 0.98 bar of Hg and 25^(@)C . What additionl pressure is required to reduce the volume of the gas to 200 mL at the same temperature ?

A gas occupies a volume of 250 mL at 745 mm Hg and 25^(@)C . What additional pressure is required to reduce the gas volume to 200 mL at the same temperature?

20 ml of a gaseous alkyne exactly requires 80 ml O_2 for complete combustion . The alkyne is :

20% deocmposition of H_(2)O_(2) in presence of an acid requires 5 min. The time required for 50% decomposition in minutes is

If a first order reaction takes 32 minutes for 75% completion, then time required for 50% completion is :

100 mL of H_(2) gas diffues in 10 sec. X mL of O_(2) gas diffuses in t sec. X and t cannot be