This document contains a chemistry worksheet with 10 multiple choice questions about solubility of salts. The questions cover topics such as calculating how much of a salt can dissolve in a given amount of water, determining saturation points, identifying the least soluble salt at a given temperature, and identifying which ions or compounds result in soluble or insoluble salts.

1. Name_______________________________________________ Group ______________
Date ________________________________________________ List # _________________
Solubility
1.- The solubility of NH4Cl is 46 grams in 100
grams of water at 40°C. How much NH4Cl can
dissolve in 500 grams of water at 40°C?
__________________________________________
2.- A solution of KClO3, has 20 grams of the salt
in 100 g of water at 70 C. Approximately how
many more grams of the salt can be added to
the solution before reaching saturation point?
a) 10 g b) 30 g c) 60 g d) 80 g
3.- Which salt is least soluble at 0 C?
a)KClO3 b)K2Cr2O7 c)KNO3 d)Ce2(SO4)3
4.- A beaker containing 80 g of Pb(NO3)2 in 100 g of water has a temperature of 30 C.
Approximately how many grams of the salt are undissolved, on the bottom of the
beaker?
a)14 g b) 20 g c) 66 g d) 80 g
5.- When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80
ºC, the solution can be correctly described as:
a) saturated b) unsaturated
6.- Salts that contain at least one of the following ions will always be soluble in water.
a) NO3-, Na+, K+ b) Mg2+, NO3-, Li+
c) Na+, Li+, Sr2+ d) Na+, K+, Cl-, NO3-
7.- Which compound will be soluble in water?
a) K2S b) Fe(NO3)2 c) NH4Br d) All of the above are soluble in water.
8.- Which compound will be insoluble in water?
a)CuS b)Ag2SO4 c)AgBr d)Ca(OH)2
9.- True or false: All salts containing Cl- and Br- are soluble.
10.- True or false: All salts containing SO4 -2 are soluble.