An aqueous solution of a weak monobasic acid containing 0.1g in 21.7g of water freezes at 272.813K. If the value of Kf for water is 1.86K/m, what is the molecular mass of the monobasic acid? Hope someone can answer this ASAP, I`ll be grateful. :)
Yashika , 8 Years ago
Grade 12th pass
1 Answers
Vikas TU
Last Activity: 8 Years ago
We know that,
Tf = i Kf m
where m is the molality.
Putting all the values,
272.813 = 2* 1.86 * m
m = 73.33
Therefore,
73.33 = (0.1/M)/(21.7/1000)
Solving for M,
we get M = 0.6628 g
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free