Compare the rates of effusion of nh3 and o2

Answer : The rate of effusion of ammonia gas is 1.37 times of rate of effusion of oxygen gas.

Solution :

According to the Graham's law, the rate of effusion of gas is inversely proportional to the square root of the molar mass of gas.

or,

where,

= rate of effusion of ammonia gas

= rate of effusion of oxygen gas

= molar mass of ammonia gas  = 17 g/mole

= molar mass of oxygen gas  = 32 g/mole

Now put all the given values in the above formula, we get :

Therefore, from this we conclude that, the rate of effusion of ammonia gas is 1.37 times of rate of effusion of oxygen gas.