1. classify each of the following solutes as an electrolyte or a nonelectrolyte:
HCl
Na2SO4
ethanol (CH3CH2OH)
2. Calculate the composition of each of the following solutins in mass/volume %
0.007g KCl per 1.00mL
1.00mol MgCl2 in 2.50x10^2 mL solution
3. Calculate the composition of each of the following solutions in mass/mass%
1.00KCl in 1.00x10^2g solution
50g KCl in 5.00x10^2 mL solution (d=1.14g/mL)
4. How many grams of solute are needed to prepare 2.50x10^2 of 5.00% (m?m) NH4Cl?
5. How many mL of 4.0mass/volume% Mg(NO3)2 solution would contain 1.2g of magnesium nitrate?
6. Calculate the number of grams of solute that would be needed to make 2.50x10^2 mL of 0.100 M NaBr.
7. Calculate the volume of 1.00x 10^-2 M KOH solution containing 3.00x 10^-1 mol of solute.
8. A 50mL sample of a 0.250 M sucrose solution was diluted to 5.00x 10^2 mL. What is the molar concentration of the resulting solution?
9. Calculate thw freezing and boiling temprature of a 0.5 molal sodium chloride solution.
10. Calculate the osmotic pressure of 0.50 M sucrose.