At identical temperature and pressure,the rat | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) According to Graham's Law of Diffusion,$\frac{r_1}{r_2} = \sqrt{\frac{M_2}{M_1}}$.Given $\frac{r_{H_2}}{r_{hydrocarbon}} = 3\sqrt{3}$,where $M_{H_

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(B) According to Graham's Law of Diffusion,$\frac{r_1}{r_2} = \sqrt{\frac{M_2}{M_1}}$.Given $\frac{r_{H_2}}{r_{hydrocarbon}} = 3\sqrt{3}$,where $M_{H_2} = 2 \ g/mol$.So,$3\sqrt{3} = \sqrt{\frac{M_{hydrocarbon}}{2}}$.Squaring both sides: $(3\sqrt{3})^2 = \frac{M_{hydrocarbon}}{2} \Rightarrow 27 = \frac{M_{hydrocarbon}}{2}$.$M_{hydrocarbon} = 54 \ g/mol$.The molecular formula is $C_nH_{2n-2}$,so $12n + (2n-2) = 54$.$14n - 2 = 54$ $\Rightarrow 14n = 56$ $\Rightarrow n = 4$.

At identical temperature and pressure,the rate of diffusion of hydrogen gas is $3\sqrt{3}$ times that of a gaseous hydrocarbon having molecular formula $C_nH_{2n-2}$. What is the value of $n$?

Similar Questions

The current in the windings of a toroid is $2.0\,A$. There are $400$ turns and the mean circumferential length is $40\,cm$. If the magnetic field inside the toroid is $1.0\,T$,the relative permeability is near to:

How many bridging oxygen atoms are present in $P_4O_{10}$?

The chemicals and the reaction conditions required for the preparation of ethane are:

$10$ cells,each of emf $E$ and internal resistance $r$,are connected in series to a variable external resistance. The figure shows the variation of the terminal potential difference of their combination with the current drawn from the combination. The emf of each cell is ............. $V$.

Which pair of substances gives the same gaseous product when they react with water?

Vedclass Test Series

Exam Paper Generator

Online Exam Module