Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

Franchisee/Partner Enquiry (North)

Franchisee/Partner Enquiry (South)

Franchisee/Partner Enquiry (West & East)

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

8788563422

Mon to Sat - 10 AM to 7 PM

Commercial sample of ammonia has density of 0.91g/cm3
 and has 25 % Ammonia on 
weight by weight basis. 
Calculate a) Molarity and mole fraction of ammonia
 b) Volume of this NH3 required to prepare 3000 cm3
 of 1M NH3. 
(5)
Q.2) How did van der Waals’ make amendments in the Ideal Gas Equation in order to 
make it valid for real gases?
(5)
Q.3) Draw the crystal structure of NaCl 

Asked by tanvitakle22 24th October 2018, 8:49 PM
Answered by Expert
Answer:
Molarity = 10 × %c × d /Molar mass = 10 × 25 × 0.91 /17 = 13.38M
 
Mole fraction ; Weight of solute = 25 × 100 = 2500g so number of moles = 2500/17 = 147moles 
 
mole fraction = {147/147 + 1.47) = 147/148.47 = 0.99
 
b) use M1V1 = M2V2 = 13.38 × V = 1 × 3 or V = 3/13.38 = 0.22L (since 3000cc = 3L)
 
2  Vanderwaal added pressure correction and reduced volume correction from the ideal pressure and volume of ideal gas equation
Image result for vanderwaal equation
 
 
3)  Image result for crystal structure of nacl
Answered by Expert 31st October 2018, 1:56 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp