In Class Worksheet (Solubility, net ionic equations and colligative properties)
Work individually with the help of the solubility rules sheet and your text book!
1) Which metal chlorides are insoluble in water?
2) Select the compounds from the list below which are insoluble in water
HCl, NH3, NaClO3, BaSO4, AgNO3, PbCl2, Cu2O, CuSO4, Pb(C2H3O2), AgBr
3) Aqueous copper (II) nitrate reacts with potassium iodide to yield copper (I)
iodide, potassium nitrate and iodine,. Write a balanced net ionic equation for the
reaction.
4) Write net ionic equations for the following mixtures of electrolytes
a. AgClO3 (aq) and Na2S
b. (NH4)3PO4 (aq) and HgSO4 (aq)
5) Write net ionic equations corresponding to the following reactions
a. Na2CO3 + Ca(NO3) 2 2NaNO3 + CaCO3
b. NaOH + HNO3  NaNO3 + H2O
c. Fe2(SO4) 3 + Fe (s)  3FeSO4
d. NaCl + AgNO3  AgCl + NaNO3
e. H2SO4 + BaCl2  BaSO4 + 2HCl
6) When 10.6 g of a nonvolatile substance is dissolved in 740 g of ether, its boiling
point is raised 0.284 ºC. What is the molecular weight of the substance? Molal
boiling-point constant for ether is 2.11 ºC x kg/mol.
7) The freezing point of a sample of naphthalene was found to be 80.6 ºC. When
0.512 g of a substance is dissolved in 7.03 g naphthalene, the solution has a
freezing point of 75.2 ºC. What is the molecular weight of the solute? The molal
freezing point constant of naphthalene is 6.80 ºC x kg/molal.
8) How much ethyl alcohol C2H5OH must be added to 1.00 L of water so that the
solution will not freeze at –4 ºC ?
2/6/2016