The rate of diffusion of a gas A is 5 times more than that of gas B. If the molar mass of A is xg mol^-1, the molar mass of B ( ) in (g mol^-1 ) is

Question

Accepted Answer

Correct answer: B. (b) r_A= 5 _B^r ,M_A=x^-1 r_Ar_B= M_BM_A ⇒ ( r_Ar_B )^2= M_BM_A ⇒ ( 5r_Br_B )^2= M_Bx ⇒5= M_Bx ⇒M_B=5x

$The rate of diffusion of a gas A is 5 times more than that of gas B . If the molar mass of A is xg mol^{- 1}, the molar mass of B () in (g mol^{- 1}) is$