WorksheetsChapter 1 : Concentration
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
What is molality?
a)
no of mole of solute in 1 liter of solution
b)
no of mole of solute in 1 kg of solvent
2.
Total number of mol fraction for all component in the solution is equal to
a)
1.0
b)
0.95
c)
0.50
d)
2.0
3.
What is the molarity of 4.0 g of NaCl (Molar mass=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.001M
c)
1.052 M
d)
0.062 M
4.
Calculate the mole fraction of benzene (C6H6) in a solution of 46.8 g benzene and 36.8 g of toluene (C7H8).
a)
0.4
b)
0.6
c)
0.7
d)
0.5
5.
Concentration is
a)
the amount of solute in the solvent
b)
the amount of solvent in the solute
c)
density
d)
particle size
6.
Molarity is
a)
moles per unit vol (mL)
b)
moles per unit vol (L)
c)
moles per unit vol (m3)
d)
moles per unit vol (mm3)
7.
What is the molarity of 3 mole of hydrochloric acid in 3 L of water
a)
3
b)
1
c)
6
d)
9
8.
Molarity is measured in
a)
mols per L
b)
moles per mL
c)
moles per kJ
d)
moles per kg
9.
The ___ is the thing being dissolved
a)
solute
b)
solvent
10.
What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?
a)
0.014 %
b)
0.13%
c)
1.4 %
11.
Which is an example of a solvent?
a)
Salt
b)
Egg whites
c)
Water
d)
Sugar
12.
Which is an example of a solute?
a)
Egg whites
b)
Sugar
c)
Water
d)
Acetone
13.
You can make a solution more concentrated by adding __________.
a)
solute
b)
solvent
c)
water
14.
How many moles of solute are present in 50.0 mL of 0.20M KNO3?
a)
10.0 moles solute
b)
0.05 moles solute
c)
1.00 moles solute
d)
0.01 moles solute
15.
A 3 M solution has how many moles per liter?
a)
1
b)
2.5
c)
4
d)
3
100 %
