WorksheetsMolarity Lab
Total questions: 29
Worksheet time: 1hrs 19mins
Name
Class
Date
1.
What is the molarity of 2 moles of NaCl in 8 L of solution?
a)
16 M
b)
0.25 M
c)
4 M
d)
2 M
2.
How many liters would you need to get 0.5 moles if you had a 0.1M solution?
a)
0.05 liters
b)
0.2 liters
c)
5 liters
d)
2 liters
3.
How many moles are in 3 L of 0.6 M solution?
a)
1.8 moles
b)
0.2 moles
c)
5 moles
d)
0.6 moles
4.
What is the molarity of a solution made from 325.4g of AlCl3 with enough water to make 500.0 mL?
a)
650 M
b)
4.880 M
c)
2.440 M
d)
1.2 M
5.
You have 286.7g of PbO. For lab, you need 2.50M PbO. How many Liters of PbO solution can you make?
a)
114 L
b)
3.2 L
c)
0.514 L
d)
1.95 L
6.
Find the molarity of 186.55 g of sugar (C12H22O11) in 250. mL of water.
a)
2.18 M
b)
85.5 M
c)
1.18 M
d)
.00218 M
7.
How many grams of solute are dissolved in 125.0 mL of 5.00M NaCl?
a)
0.625 g NaCl
b)
1.45 g NaCl
c)
36.5 g NaCl
d)
11.6 g NaCl
8.
What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?
a)
0.488 M
b)
0.77 M
c)
7.67 M
d)
0.00767 M
9.
How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?
a)
58 mol
b)
62.7 mol
c)
1.07 mol
d)
0.145 mol
10.
How many milliliters of solution can be made from 45.75 grams of potassium iodide if you need a solution with 2.55 M?
a)
108 L
b)
0.108 L
c)
0.056 mL
d)
216 mL
11.
Write the balanced equation for silver chloride reacting with aluminum sulfide.
a)
AgCl2 + Al2S3 --> Ag2S + AlCl3
b)
AgCl + Al2S3 --> Ag2S + AlCl3
c)
3AgCl + AlS3 --> 3AgS + AlCl3
d)
6AgCl + Al2S3 --> 3Ag2S + 2AlCl3
12.
What is the molarity of a solution made by adding 421.5 g of PbNO3 and adding water to 500. mL?
a)
300. M
b)
31.3 M
c)
3.13 M
d)
1.56 M
13.
What is the concentration of a solution that has a volume of 2.5 L and contains exactly 2.125 moles of calcium phosphate? **Remember to write the chemical formula**
a)
264 M
b)
0.85 M
c)
3.7 M
d)
2.0 M
14.
You have a 0.5 M MgSO4 stock solution available. Calculate the volume of the stock solution needed to make 2.0 L of 0.20 M MgSO4.
a)
0.8 L
b)
5 L
c)
0.1 L
d)
0.5 L
15.
How many grams of iron (III) bromide are required to make 2.25 L of 1.45 M solution?
a)
3.26 grams
b)
296 grams
c)
963 grams
d)
96.3 grams
16.
Calculate the molarity of the following solution: 400.0 g of CuSO4 in 4.00 L solution.
a)
100. M
b)
251 M
c)
0.627 M
d)
1.60 M
17.
You have 286.7g of PbO. For lab, you need 2.50M PbO. How much PbO can you make?
a)
0.5140mL
b)
554 mL
c)
514 mL
d)
0.554 L
18.
Solution A: 10g of Na2SO4 dissolved in 200mL of water
Solution B: 20g of Na2SO4 dissolved in 400mL of water
Solution B: 20g of Na2SO4 dissolved in 400mL of water
a)
The concentration of the solutions are the same
b)
Solution A is more concentrated than Solution B
c)
Solution A is more dilute than Solution B
d)
I really like staring at clouds
19.
How many grams of solute are dissolved in 125.0 mL of 5.00M NaCl?
a)
0.625 g NaCl
b)
56.3g NaCl
c)
36.5 g NaCl
d)
0.625 mol NaCl
20.
A solute that contains polar molecules will dissolve in a solvent that contains
a)
nonpolar molecules
b)
polar molecules
c)
covalent molecules
d)
equal-sized molecules
21.
Which of the following would have the fastest rate of dissolution?
a)
a sugar cube in hot water
b)
a sugar cube in cool water
c)
powdered sugar in hot water
d)
powdered sugar in cool water
22.
What is the percent composition of a sugar solution where 10 grams of sugar is added to 100 grams of water?
a)
.10%
b)
0.091%
c)
9.090909%
d)
9.1%
23.
What is the concentration of a solution that has a volume of 2.5 L and contains exactly 660.0 grams of calcium phosphate? **Remember to write the chemical formula**
a)
264 M
b)
0.85 M
c)
3.7 M
d)
2.0 M
24.
You have a 0.5 M MgSO4 stock solution available. Calculate the volume of the stock solution needed to make 2.0 L of 0.20 MgSO4.
a)
0.8 L
b)
5 L
c)
0.1 L
d)
0.5 L
25.
Calculate the molarity of the following solution: 1.0 moles of KCl in 750.0 mL of solution.
a)
0.750 M
b)
99 M
c)
1.3 M
d)
2.0 M
26.
What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250 mL?
a)
15.9 M
b)
0.636 M
c)
0.642 M
d)
1.59 M
27.
If I add water to 100.0 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be?
a)
0.23 M
b)
0.10 M
c)
1.0 x 105 M
d)
1.0 M
28.
You have a 0.5 M MgSO4 stock solution available. Calculate the volume of the stock solution needed to make 2.0 L of 0.20 MgSO4.
a)
0.8 L
b)
5 L
c)
0.1 L
d)
0.5 L
29.
How much 1.50M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?
a)
150. mL
b)
151 mL
c)
1.00 L
d)
100. mL
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