The following solutions all lower the freezing point of the given solvent.. Arrange them in order...
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).
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
Choose the solvent below that would show the smallest amount of freezing point depression when used to make a 0.20 m nonelectrolyte solution carbon tetrachloride, K = 29.9°C/m chloroform, k, = 4.70"C/m ethanol, K = 1.99"Cim diethyl other, K=1.79"C/m benzene, K = 5.12 Cm
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 (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 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 benzene, C6H6, is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is DDT . A student dissolves 14.18 grams of DDT, C14H9Cl5 (354.5 g/mol), in 159.0 grams of benzene. 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...
Could someone help me solve problems 16 and 17?
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What is the freezing point of water made by dissolving 16.63 g of ethylene glycol (CH_2(OH)CH_2(OH)) in 86.97 g of water? The freezing-point depression constant of water is 1.86 degree C/m. Answer: What is the freezing Point water made by dissolving 13.98 g of magnesium chloride in 85.25 g of water? The freezing-point depression constant of water is 1.86 degree C/m. Answer:
The freezing point of benzene C6H6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is testosterone . How many grams of testosterone, C19H28O2 (288.4 g/mol), must be dissolved in 243.0 grams of benzene to reduce the freezing point by 0.500°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...
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.