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Worksheet # 9
Ion Concentration
1.
What is the concentration of each ion in a 10.5 M sodium sulfite solution?
2.
What is the concentration of each ion in a 5.55 M zinc phosphate solution?
3. What is the concentration of each ion in the solution formed when 94.78 g of iron (III) sulfate is dissolved into 550.0 mL of water?
4.
What is the concentration of each ion in a 0.20 M sodium phosphate solution?
5. What is the concentration of each ion in the solution formed when 16.5 g of aluminum sulfate is dissolved into 600.0 mL of water?
6. If 1.78 L of 0.420 M barium fluoride solution is added to 2.56 L of water, what is the resulting concentration of each ion?
7.
What is the concentration of each ion in a 1.22 M zinc acetate solution?
8.
If the chloride concentration in 2.00 L of solution is 0.0900 M, calculate the [Al3+] (concentration of aluminum ions) and the molarity of the AlCl3 solution.
9. The [Cl-] (concentration of chloride ions) = 0.600 M in 100.0 mL of a AlCl3 solution. How many grams AlCl3 are in the solution?
10.
The [SO42-] (concentration of sulfate ions) = 0.600 M in 100.0 mL of a Al2(SO4)3 solution. How many grams Al2(SO4)3 are in the solution?
11. 105.4 g of potassium sulfate is poured into a container holding 2.50 liters of .500 M barium chloride. Write the equation of the reaction
Now write the ionic equation for the reaction
Now write the net ionic equation for the reaction for the production of barium sulfate (only the ions involved in producing barium sulfate)
What is the mass of barium sulfate that forms?
What is the concentration of potassium chloride in that solution?
ANSWERS ---
Worksheet # 9
Ion Concentration
1.
What is the concentration of each ion in a 10.5 M sodium sulphite solution?
2.
+ SO3210.5 M 21.0M 10.5M What is the concentration of each ion in a 5.55 M zinc phosphate solution? Na2SO3
→
2 Na+
Zn3 (PO4) 2
→
3Zn 2+
2PO43-
+
5.55 M 16.7 11.1 M 3. What is the concentration of each ion in the solution formed when 94.78 g of iron (III) sulfate is dissolved into 550.0 mL of water? Fe2 (SO4)3 →
2Fe3+
0.4309 M
0.8619 M 94.78 g
[Fe2 (SO4) 3] 4.
+
x
=
3SO421.293 M
1 mol 399.9 g
= 0.4309 M
0.5500
What is the concentration of each ion in a 0.20 M sodium phosphate solution?
Na3PO4 → 3 Na+ + PO430.20 M 0.60M 0.20 M 5. What is the concentration of each ion in the solution formed when 16.5 g of Aluminum sulfate is dissolved into 600.0 mL of water? 16.5 g [Al2 (SO4) 3] = Al2 (SO4) 3 → 0.0803 M
x
1 mol 342.3 g
= 0.0803 M
0.600 L 2Al3+ + 0.161 M
3SO420.241M
6. If 1.78 L of 0.420 M barium fluoride solution is added to 2.56 L of water, what is the resulting concentration of each ion? M1V1 = M2V2
BaF2
(0.420)(1.78) = M2 (4.34)
0.172 M
M2 = 0.172 M
→
Ba2+ 0.172 M
+
2F0.345 M
7.
What is the concentration of each ion in a 1.22 M zinc acetate solution? Zn (CH3COO) 2 1.22 M
8.
→ Zn 2+ 1.22M
+
2CH3COO2.44M
If the chloride concentration in 2.00 L of solution is 0.0900 M, calculate the [Al3+] and the molarity of the AlCl3 solution. AlCl3
→
0.0300 M
Al3+
3Cl-
+
0.0300 M
0.0900 M
9. The [Cl-] = 0.600 M in 100.0 mL of a AlCl3 solution. How many grams AlCl3 are in the solution? →
AlCl3
Al3+
+
0.200 M 0.1000 L
10.
x
3Cl0.600 M
0.200 mole x 133.5 g 1L 1 mole
=
2.67 g
The [SO42-] = 0.600 M in 100.0 mL of a Al2(SO4)3 solution. How many grams Al2(SO4)3 are in the solution? 6.85 g
11. 105.4 g of potassium sulfate is poured into a container holding 2.50 liters of .500 M barium chloride. Write the equation of the reaction K2SO4 (aq) + BaCl2 (aq) => 2KCl (s) + BaSO4 (aq) Now write the ionic equation for the reaction 2K+ + SO42- (aq) + Ba2+ + 2Cl- (aq) => 2KCl (s) + Ba2+ + SO42Now write the net ionic equation for the reaction SO42- + Ba2+ => BaSO42What is the mass of potassium chloride that forms?
What is the concentration of magnesium chloride in that solution?
