Question

a solution of 10.00g of an unknown nondissociating compound dissolved in 100.00g of benzene freezes at...

a solution of 10.00g of an unknown nondissociating compound dissolved in 100.00g of benzene freezes at 3.45degree C. the Kf of benzene is 5.07degreeC/m. the freezing point of benzene is 5.45degreeC.
Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
When 20.0 grams of an unknown nonelectrolyte (i=1) compound are dissolved in 500.0 grams of benzene,...
When 20.0 grams of an unknown nonelectrolyte (i=1) compound are dissolved in 500.0 grams of benzene, the freezing point of the resulting solution is 3.77 °C. The freezing point of pure benzene is 5.444 °C and the Kf for benzene is 5.12 °C/m. What is the molar mass of the unknown compound?
A solution of 12.00 grams of an unknown nonelectrolyte compound is dissolved in 200.0 grams of...
A solution of 12.00 grams of an unknown nonelectrolyte compound is dissolved in 200.0 grams of benzene. The resultant solution freezes at 3.45oC. What is the molar mass of the unknown compound? [The freezing point of pure benzene is 5.45oC ; the Kf for benzene is 5.07oC m-1]. (Hint: this is a two-step challenge, involving first finding the number of moles of solute in the solution from the freezing point data and then its molar mass in units of grams/mole)...
A 8.50-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point...
A 8.50-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this solution is 1.02°C below that of pure benzene. What is the molar mass of this compound? (Note: Kf for benzene = 5.12°C/m.) Ignore significant figures for this problem.
An 13.1 gram sample of napthalene (C10H8) is dissolved in 403.5 grams of an unknown solvent....
An 13.1 gram sample of napthalene (C10H8) is dissolved in 403.5 grams of an unknown solvent. The normal freezing point of the unknown solvent is 6.6 oC while the solution of naphthanlene in the solvent freezes at 0.7 oC. What is the freezing point depression constant (Kf) for the unknown solvent?
The freezing point of benzene, C6H6, is 5.500 °C at 1 atmosphere. Kf(benzene) = 5.12 °C/m...
The freezing point of benzene, C6H6, is 5.500 °C at 1 atmosphere. Kf(benzene) = 5.12 °C/m In a laboratory experiment, students synthesized a new compound and found that when 10.69 grams of the compound were dissolved in 260.5 grams of benzene, the solution began to freeze at 4.957 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? _____g/mol
A solution contains 11.45 g of unknown compound dissolved in 50.0 mL of water. (Assume a...
A solution contains 11.45 g of unknown compound dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -4.73 ∘C. The mass percent composition of the compound is 53.31% C, 11.19% H, and the rest is O. What is the molecular formula of the compound? Express your answer as a molecular formula.
A solution is prepared by mixing 12.0g of unknown electrolyte with 80.0g of water. The solutions...
A solution is prepared by mixing 12.0g of unknown electrolyte with 80.0g of water. The solutions freezes at -1.94C. The freezing point of pure water is 0.0C. the value of Kf for water is 1.86C/m. a) what is the molality of the solution? b)what are the moles of unknown electrolyte in the solution? c)what is the molecular weight of the unknown?
When 8.05 g of an unknown compound X was dissolved in 100 g of benzene C6H6,...
When 8.05 g of an unknown compound X was dissolved in 100 g of benzene C6H6, the vapor pressure of the benzene decreased from 100 torr to 94.8 torr at 26 degrees C. (MW C6H6 =78.0 g/mol.) a.) What is the mole fraction for unknown compound X? b.) What is the molar mass of unkown compound X?
Post-lab questions: 1. Benzene, which freezes at 5.50 oC, has a Kf value of 5.10 oCkg/mol....
Post-lab questions: 1. Benzene, which freezes at 5.50 oC, has a Kf value of 5.10 oCkg/mol. How does this compare to that of t-butyl alcohol determined in this lab? 2. Would more or less solute be required to cause the same temperature change observed in this lab if the solvent were benzene? 3. If 0.10 mole of a nonelectrolyte solute were added to 50.0 g of benzene, what would the freezing point of the solution be? 4. How would the...
The freezing point depression constant tells how the temperature changes for a 1 molal concentration of...
The freezing point depression constant tells how the temperature changes for a 1 molal concentration of solute. If camphor is dissolved in cyclohexane so that the concentration is 1.5 molal, what is the freezing point of the solution? (See Table in lab procedure for Kf values.) What are the five major steps in this experiment? a. b. c. d. e. An important hazard of cyclohexane is __________________________________. How will you know if the solute is completely dissolved? Howdoyoucleanupthetesttubeattheendoftheexperiment? 4. 5....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT