Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

A mixture containing 1.12 L of H 2 and 1.12 L of D 2 at STP is taken insidea bulb connected to another bulb by a stopcock with a small opening. The second bulb is fullt evacuated, the stopcock is opened for a certain time and then closed. The first bulb is found to comtain 0.05g og H 2 . Dtermine the percentage composition by weight of the gases in the second bulb.

A mixture containing 1.12 L of H2 and 1.12 L of D2 at STP is taken insidea bulb connected to another bulb by a stopcock with a small opening. The second bulb is fullt evacuated, the stopcock is opened for a certain time and then closed. The first bulb is found to comtain 0.05g og H2 . Dtermine the percentage composition by weight of the gases in the second bulb.

Grade:12

1 Answers

Aman Bansal
592 Points
9 years ago

Dear Abhijat,

Rate of diffusion ~ 1/ molecular mass
MD2 = 4
MH2= 2

RH2/RD2 = (2)^{1/2}

As temp and volume (of the gases in the second container) remain constant

R ~ Pressure of gases (P)

P ~ no. of moles (n) => R ~ n

nD2 = nH2/ (2)^1/2

Initial moles of H2 in 1st bulb = 1.12 / 22.4 =0.05
Final moles of H2 in 1st bulb = 0.05/2
No. of moles of H2 in 2nd bulb = 0.05/2 => Wt of H2 = 0.05 g

nD2 = 0.05/2*1.414 = 0.0176
=> Wt of D2 = 4 * 0.0176 = 0.0707 g

% of hydrogen=41.4%

(~ means proportional to)

Best Of luck

Cracking IIT just got more exciting,It’s not just all about getting assistance from IITians, alongside Target Achievement and Rewards play an important role. ASKIITIANS has it all for you, wherein you get assistance only from IITians for your preparation and winexciting gifts by answering queries in the discussion forums. Reward points 5 + 15 for all those who upload their pic and download the ASKIITIANS Toolbar, just a simple click here to download the toolbar….

So start the brain storming…. become a leader with Elite Expert League ASKIITIANS

Thanks

Aman Bansal

Askiitian Expert

 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free