Molarity Solutions
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ScribdTranslationsMolarity Solutions
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ScribdTranslationsCHEMISTRY [SOLUTIONS.
MOLARITY]
1. For each of the following solutions, calculate their molarity.
a). 0.50 mol of NaCl and 0.200 l Sol. 2.5M
b). 0.50 mol of NaCl and 0.125 l Sol. 4M
0.75 mol of NaCl and 300 ml Sol. 2.5 M
5.0g of CaCl22.5 l Sol. 0.018M
1.1 kg of KBr and 4.5 l Sol. 1.234M
1.5g of NaNO3and 75 ml Sol. 235.33M
4.5 g of Na2SO4and 125 ml Solution 0.25M
2. Calculate the molarity of the following solutions:
0.10 mol of solute in 250 ml of solution. Solution 0.4M
b). 2.5 mol of NaCl in 0.650 l of solution. Sol. 3.85M
c). 0.025 mol of HCl in 10 ml of solution Sol. 2.5M
0.35 mol of BaCl22H2Or in 593 ml of solution Sol. 0.59M
3. Calculate the molarity of the following solutions:
53 g of Na2Chromium(II) oxide4in 1.00l of solution Sol. 0.33M
260 g of C6H12O6in 800 ml of solution Sol. 1.8M
c). 1.50 Kg of Al2(SO4)3in 2.00 L of solution Sol. 2.19M
0.0282 g of Ca(NO3)2in 1.00 ml of solution Sol. 0.17M
4. Calculate the number of moles of solute in each of the following solutions:
40 L of LiCl 1.0M 40 moles
b). 25 ml of H2SO43.00M Sol. 0.075 moles
c). 349 ml of NaOH 0.0010 M Sol. 3.49x10-4moles
5000 ml of COCl23.1M Sol. 15.5 moles
5. How many moles of the indicated solute does each of the following solutions contain:
a). 10 l of NaHCO solution30.550 M 5.5 moles
b). 5.0 L of 12M HCl solution Sol. 60 moles
c). 250 ml of NaOH 19.4M solution 4.85 moles
d). 125 ml of acetic acid, HC2H3O217.0 M Sol. 2.125 moles
1.5 l of H solution2SO43.0M Sol. 4.5 moles
f). 35 ml of 5.4M NaCl solution Sol. 0.189 moles
6. Calculate the grams of solute in each of the following solutions:
1.5 l of NaCl 1.0M Sol. 87.66 g
0.035 L of HCl 10.0M Sol. 12.76 g
c). 260 ml of H2SO418M Sol. 459.01 g
d). 8.00 ml of Na2C2O4 Sol. 3.75 g
Ing. Juan L. Montoya Castillo 1
CHEMISTRY [SOLUTIONS. MOLARITY]
7. How many grams of the indicated solute does each of the following solutions contain?
2.00 L of 1.33 M NaCl solution Sol. 155.45 g
b). 0.050 ml of 6.0M HCl solution Sol. 10.95 g
125 ml of HNO solution33.05 M Sol. 23.94 g
1.25 L of NaBr solution 0.503 M Sol. 64.82 g
e). 3.8 L of 1.5M KCl solution Sol. 424.94 g
f). 15 ml of 5.4 M NaCl solution Sol. 4.68 g
20 L of 12.1M HCl solution Sol. 8 823.32 g
25 ml of HClO solution40.100 M Sol. 0.25 g
8. How many milliliters of 0.256M KCl solution will contain the following:
0.430 mol of KCl Sol. 1.68 l
10.0 mol of KCl Sol. 39.06 l
c). 20.0 mol of KCl Sol. 78.125 l
3.5 mol of KCl Sol. 13.68 l
9. What volume of 2.0M NaCl solution can be prepared with 50g of NaCl? Sol. 0.43 l
10. What volume of 0.25 M AgNO solution3it can be prepared with 10g of AgNO3? Sol. 0.24 l
11. If 155 g of sucrose C is dissolved12H22O11, enough water to have 1.00 L of solution, what
What is molarity? Sol. 0.45 M
12. If 125 g of sucrose C are dissolved12H22O11in sufficient water to have 450ml of solution, what
What is molarity? Sol. 0.81 M
1.0g of AgNO is dissolved3in enough water to a final volume of 18 ml. Calculate the molarity
from the AgNO solution3.Sol. 0.33 M
14. Concentrated hydrochloric acid is made by bubbling gaseous hydrogen chloride into water.
distilled. If the concentrated HCl contains 439g of HCl per liter, what is its molarity? Solution: 12 M
15. If 1.5 mg of NaCl is dissolved in enough water to obtain 1.0 ml of solution, what is the
molarity of NaCl in the solution? Sol. 0.026 M
16. To prepare 500 ml of a 0.10M sucrose solution, C12H22O11How many grams of sucrose
are required? Sun. 17.11 g
17. If you were asked to prepare 250 ml of a 3.00M NaOH solution from solid NaOH, how many
How many grams of NaOH are required? Sol. 30 g
Ing. Juan L. Montoya Castillo 2
CHEMISTRY SOLUTIONS. MOLARITY
18. A procedure requires 0.040 mol of sucrose. How many milliliters of a sucrose solution
How would 0.100 M be used? Solution 400 ml
19. A procedure requires 0.150 mol of NaOH. How many milliliters of a 3.00M NaOH solution are needed?
must be used? Sol. 50 ml
20. How many milliliters of 0.100M sucrose solution would be needed to obtain 8.00 g of sucrose?
C12H22O11Sol. 234 ml
21. How many milliliters of 3.0M NaOH solution are needed to obtain 8.00 g of NaOH?
Sol. 667 ml