
0.01 mol of sodium chloride, NaCl, is dissolved in 100 g of water. By how much...
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 boiling point of water is 100.0°C at 1 atmosphere. How many grams of zinc chloride (136.3 g/mol), must be dissolved in 209.0 grams of water to raise the boiling 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 zinc chloride.
Assuming complete dissociation of the electrolyte, if 11.96 grams of sodium chloride (NaCl, 58.44 g/mol) are dissolved in 243.0 grams of water, what is the boiling point of the solution?
Calculate the boiling point of the solution when 15.0 g of aluminum chloride, is dissolved in 750 g water. The kb for water is 0.512°C/m.
two Part question A: The boiling point of water is 100.0°C at 1 atmosphere. How many grams of chromium(II) bromide (211.8 g/mol), must be dissolved in 287.0 grams of water to raise the boiling 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 chromium(II) bromide. ____ ? B...
21. 13.5 g of NaCl is dissolved in 100.0 g of H20. The boiling point of the water after the salt is added is The boiling point elevation constant for water: Ko = 0.512 °C/m. A) 102.4°C B) 101.2°C C) 104.5°C D) 108.4°C 22. A process has an equilibrium constant K of 2.5 x 10 at 300 K. What is AGⓇ at that temperature? A) 19.5 kJ/mol B) 25 kJ/mol C) -19.5 kJ/mol D) 75 kJ/mol 23. In heterogeneous catalysis,...
4. What is the mass % of NaCl if 15 g sodium chloride are dissolved in 374 g H2O? (Hint: don't forget that solution mass = solute + solvent mass.) 5. What mass of acetic acid (HC2H302 = 60 g/mol) must be dissolved in 1340 g H2O to produce a 2.75 m solution? 6. What is the new volume of a solution if 437 mL of a .968 M solution are diluted to a .315 M solution? 7. One solution...
21. 13.5 g of NaCl is dissolved in 100.0 g of H20. The boiling point of the water after the salt is added is The boiling point elevation constant for water: Kp = 0.512 °C/m. A) 102.4° C B) 101.2°C C) 104.5°C D) 108.4°C 22. A process has an equilibrium constant K of 2.5 x 10' at 300 K. What is AG° at that temperature? A) 19.5 kJ/mol B) 25 kJ/mol C) -19.5 kJ/mol D) 75 kJ/mol 23. In heterogeneous...
a) If 1.95 mol of calcium chloride is added to 2.30 kg of water then what is the freezing point lowering and the freezing point of the solution (Kf = 1.86 ºC/m)? b) If 0.500 mol of NaCl is added to 500 mL of water then what is the boiling point elevation and the boiling point of the solution (Kb = 0.52 ºC/m)?
The boiling point of water is 100.0°C at 1 atmosphere. How many grams of aluminum nitrate (213.0 g/mol), must be dissolved in 279.0 grams of water to raise the boiling point by 0.450°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