two gases No and oxygen were introduced at the both ends of one meter tube.At what distance from No gas end ,brown gas will be seen?

Nitrogen di oxide (No)  ; i didn't understand what No is but i think it is Nitrogen Oxide right ? , so assuming that it is NO , i m continuing with the solution.

in a one metre tube , Nitrogen Di Oxide and Oxygen is passed through each side.

2NO + O₂ → 2NO₂ (because NO₂ Is the brown gas)

therefore by the reaction stoichiometry we see that

2 moles of NO are required for every 1 mole of O to for NO₂

SO ratio of NO to total = 2 : 3

the brown gas will be found near the part of the metre tube where oxygen is being pumped from.

it will be seen at a distance of 2/3 * 100 = 66.667 cm from the point where Nitrogen di oxide is introduced.

so it is 33.333cm from the end where oxygen is introduced !

Please approve !

Don't post the same questions too many times

Your question has already been answered

rate of diffusion = k/(molar mass)^1/2

r₀₂ = k/root16

r_NO = k/root14

rNO/rO2 = root(8/7)

xNO/XO2 = root8/7

xNO + xO2 = 1

XNo = 1/1+root8/7

  =  0.483m

Let the distance be x metres from NO2.... as x is directly proportional to 1/√Molecular weight x/1-x =√M(O2)/√M(NO2)

Approved