Log in
Chemistry
1
answer
0
watching
102
views
13 Dec 2019

7.85 g of a compound with an unknown formula is dissolved in 300 g of benzene. The freezing point of the solution is 2.10 degrees celsius below that of pure benzene. What is the molar mass of the compound? (FP of pure benzene=5.51 degrees celsius; Kf(benzene)=5.12 degrees C/molal)

Please explain how you got your answer.

Watch
1
answer
0
watching
102
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Jarrod Robel
Jarrod RobelLv2
17 Dec 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
discord banner image
Join us on Discord
Chemistry Study Group
Join now

Related textbook solutions

Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232

Related questions

1.25 grams of an unknown compound is dissolved into 85.0 grams of benzene, organic solvent with a freezing point depression constant, Kf = 5.12 C/m. The freezing point of pure benzene is 5.51 C and the freezing point of the solution is 4.50 C. Find the molar mass of the unknown compound.

A 1.60-g sample of a mixture of naphthalene () and anthracene () is dissolved in 20.0 g of benzene (). The freezing point of the solution is 2.81 oC. What is the composition, as mass percent, of the sample mixture? The freezing point of pure benzene is 5.51 oC and its cryoscopic constant (Kf) is 5.12 oC kg mol-1.

An organic acid was analyzed and the following percent composition was obtained: 68.85% Carbon, 4.9% hydrogen, 26.2 Oxygen. A solution of 1.02 g of this compound dissolves in 10.0 g of benzene freezes at 3.37 degrees C. The normal freezing point of benzene us 5.50 degrees C and it has a Kf of 5.12 C/m. Determine the molecular formula for this compound.

Weekly leaderboard

Home
Homework Help 3,900,000
Chemistry 830,000
Start filling in the gaps now
Log in