Molarity Worksheet
Molarity Worksheet #1 identifiera ____________________
1. What does molarity mean?
Number of moles of solute
1 liter solution
2. What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution?
4.53 mol LiNO3 = 1.59 M LiN03 2.85 L soln
3. What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution?
0.00372 mol HCL = 0.156 M HCL 2.39x10-2 L soln
4. A flask contains 85.5 g C12H22O11 (sucrose) in 1.00 liters of solution. What is the molarity?
85.5g sucrose x 1 mol sucrose = 0.250 M sucrose …show more content…
A beaker contains 214.2 grams osmium (III) fluoride in 0.0673 liters of solution. What is the molarity?
214.2g OsF3 x 1 mol OsF3 = 12.9 M OsF3 0.0673 L soln 247.23g …show more content…
A chalice contains 36.45 grams ammonium chlorite in 2.36 liters of solution - calculate the molarity.
36.45g NH4ClO2 x 1 mol NH4ClO2 = 0.181 M NH4ClO2 2.36 L soln 85.50g NH4ClO2
8. What is the molarity of a solution that contains 14.92 grams magnesium oxalate in 3.65 ml of solution?
14.92g MgC2C4 x 1 mol MgC2C4 = 36.4 mol MgC2C4 0.00365 L soln 112.32g MgC2C4
9. What mass of lithium phosphate would you mass to make 2.5 liter of 1.06 M lithium phosphate solution?
2.5 L soln x 1.06 mol Li3PO4 x 115.79g Li3PO4 = 310g Li3PO4 1 L soln 1 mol Li3PO4
10. If you evaporated 250. mL of a 3.5 M solution of iron (II) nitrite, what mass of iron (II) nitrite would you recover?
0.250 L soln x 3.5 mol Fe(NO2)2 x 147.86g Fe(NO2)2 = 130g Fe(NO2)2 1 L soln 1 mol Fe(NO2)2
11. A chemist has 4.0 g of silver nitrate and needs to prepare 2.0 L of a 0.010 M solution. Will there be enough silver nitrate? If so, how much silver nitrate will be left over?
2.0 L soln x 0.010 mol AgNO3 x 169.88g AgNO3 = 3.4g AgNO3 Used/Needed
1 L soln 1 mol
1. What does molarity mean?
Number of moles of solute
1 liter solution
2. What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution?
4.53 mol LiNO3 = 1.59 M LiN03 2.85 L soln
3. What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution?
0.00372 mol HCL = 0.156 M HCL 2.39x10-2 L soln
4. A flask contains 85.5 g C12H22O11 (sucrose) in 1.00 liters of solution. What is the molarity?
85.5g sucrose x 1 mol sucrose = 0.250 M sucrose …show more content…
A beaker contains 214.2 grams osmium (III) fluoride in 0.0673 liters of solution. What is the molarity?
214.2g OsF3 x 1 mol OsF3 = 12.9 M OsF3 0.0673 L soln 247.23g …show more content…
A chalice contains 36.45 grams ammonium chlorite in 2.36 liters of solution - calculate the molarity.
36.45g NH4ClO2 x 1 mol NH4ClO2 = 0.181 M NH4ClO2 2.36 L soln 85.50g NH4ClO2
8. What is the molarity of a solution that contains 14.92 grams magnesium oxalate in 3.65 ml of solution?
14.92g MgC2C4 x 1 mol MgC2C4 = 36.4 mol MgC2C4 0.00365 L soln 112.32g MgC2C4
9. What mass of lithium phosphate would you mass to make 2.5 liter of 1.06 M lithium phosphate solution?
2.5 L soln x 1.06 mol Li3PO4 x 115.79g Li3PO4 = 310g Li3PO4 1 L soln 1 mol Li3PO4
10. If you evaporated 250. mL of a 3.5 M solution of iron (II) nitrite, what mass of iron (II) nitrite would you recover?
0.250 L soln x 3.5 mol Fe(NO2)2 x 147.86g Fe(NO2)2 = 130g Fe(NO2)2 1 L soln 1 mol Fe(NO2)2
11. A chemist has 4.0 g of silver nitrate and needs to prepare 2.0 L of a 0.010 M solution. Will there be enough silver nitrate? If so, how much silver nitrate will be left over?
2.0 L soln x 0.010 mol AgNO3 x 169.88g AgNO3 = 3.4g AgNO3 Used/Needed
1 L soln 1 mol