HomeworkLib
Question

Arrange the following solutions in order of increasing freezing point depression: A. 0.10 m MgCl2 in...

Arrange the following solutions in order of increasing freezing point depression:

A. 0.10 m MgCl2 in water, i = 2.7, Kf = 1.86°C/m
B. 0.16 m toluene in diethyl ether, i = 1.00, Kf = 1.79°C/m
C. 0.24 m ethylene glycol in ethanol, i = 1.00, Kf = 1.99°C/m

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The freezing point depression constant is the degrees that the freezing point of the solvent is lowered when 1 mole of a solute is dissolved in 1 kg grams of the solvent.

When a solute is dissolved in a solvent, the freezing point of the solvent is lowered.

Depression in freezing point = i*Kf*m

where, Kf = cryoscopic constant for the solvent
m = molality.. moles solute / kg solvent
i = van't hoff factor = ions 1 molecule of solute dissociates into in solution.
so order is B<C<A

0 0
Add a comment
Answer #2

0 0
Add a comment
Know the answer?
Add Answer to:
Arrange the following solutions in order of increasing freezing point depression: A. 0.10 m MgCl2 in...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Arrange the following solutions in order of increasing freezing point depression. [Hint: The corresponding van’t Hoff...

    Arrange the following solutions in order of increasing freezing point depression. [Hint: The corresponding van’t Hoff factor (i) is given]: (a) 0.10 m MgCl2 in water, i = 2.7, Kf = 1.86°C/m for the solvent (water). (b) 0.20 m toluene in diethyl ether, i = 1.00, Kf = 1.79°C/m for the solvent (diethyl ether). (c) 0.20 m ethylene glycol in ethanol, i = 1.00, Kf = 1.99°C/m for the solvent (ethanol).

  • The following solutions all lower the freezing point of the given solvent.. Arrange them in order...

    The following solutions all lower the freezing point of the given solvent.. Arrange them in order of increasing freezing point depression. a. 0.1 m MgCl, in water, i = 2.7, K_f = 1.86 degree C/m b. 0.20 m toluene in diethyl ether, i = 1.00, K_f = 1.79 degree C/m c. 0.20 m glycol methanol, i = 1.00, K_f = 1.99 degree C/m

  • Calculate the molality for each of the following solutions. Then, calculate the freezing-point depression ATF =...

    Calculate the molality for each of the following solutions. Then, calculate the freezing-point depression ATF = iKFCm produced by each of the salts. (Assume the density of water is 1.00 g/mL and KF = 1.86°C/m.) (a) 1.8 M NaCl (Assume the density of the solution is 1.00 g/mL.) Cm = 4.9 2.0 m ATF = 49 7.5 ✓ °C (b) 24 g of KCl in 1.6 L of water cm = 49, 0.20 ATF = 49) 0.75 (c) 250 ppm...

  • Match the following aqueous solutions with the appropriate letter from the column on the right. 1.0.18...

    Match the following aqueous solutions with the appropriate letter from the column on the right. 1.0.18 m Co(NO3)2 2. 0.25 m KCH3COO 3.0.24 m KCH3COO 4.0.56 m Ethylene glycol(nonelectrolyte) A. Lowest freezing point B. Second lowest freezing point C. Third lowest freezing point D. Highest freezing point The boiling point of water is 100.0°C at 1 atmosphere. How many grams of iron(II) nitrate (179.9 g/mol), must be dissolved in 285.0 grams of water to raise the boiling point by 0.400°C?...

  • The freezing point of water is 0.00°C at 1 atmosphere. How many grams of cobalt(II) bromide...

    The freezing point of water is 0.00°C at 1 atmosphere. How many grams of cobalt(II) bromide (218.7 g/mol), must be dissolved in 287.0 grams of water to reduce the freezing point by 0.350°C ? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02

  • The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 10.34 grams of...

    The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 10.34 grams of calcium acetate, Ca(CH3COO)2 (158.2 g/mol), in 216.0 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is ________m. The freezing point of the solution is ___________...

  • The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.54 grams of chromium(II) acetate, Cr(CH3COO)2 (170.1 g/mol), in 158.2 grams of water. Use the table of boiling and freezin...

    The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.54 grams of chromium(II) acetate, Cr(CH3COO)2 (170.1 g/mol), in 158.2 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C....

  • The freezing point of water is 0.00°C at 1 atmosphere. How many grams of nickel(II) sulfate...

    The freezing point of water is 0.00°C at 1 atmosphere. How many grams of nickel(II) sulfate (154.8 g/mol), must be dissolved in 210.0 grams of water to reduce the freezing point by 0.400°C ? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 g nickel(II) sulfate.

  • Ex. Calculate the boiling point elevation and the freezing point depression of a 250g of ethylene...

    Ex. Calculate the boiling point elevation and the freezing point depression of a 250g of ethylene glycol that dissolves in 750g of water. Kb of the solvent is 0.510c/m and its Kf is 1.86oc/m linn. dolta Tbkbimi

  • The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 12.31 grams...

    The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 12.31 grams of cobalt(II) acetate, Co(CH3COO)2 (177.0 g/mol), in 287.1 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is _____m. The boiling point of the solution is  °____C....

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT