3PbO2 + Cr2(SO4)3 + K2SO4 + H2O  3PbSO4 + K2Cr2O7 + H2SO4

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3PbO2 + Cr2(SO4)3 + K2SO4 + H2O  3PbSO4 + K2Cr2O7 + H2SO4 a 34. If 25.0 g of each reactant were used in performing the following reaction, which would be the limiting reactant? (a) PbO2 (b) H2O (c) K2SO4 (d) PbSO4 (e) Cr2(SO4)3

(a) MnO2 (b) KOH (c) O2 (d) Cl2 (e) KMnO4 2MnO2 + 4KOH + O2 + Cl2  2KMnO4 + 2KCl + 2H2O b 35. If 20.0 g of each reactant were used in performing the following reaction, which would be the limiting reactant? (a) MnO2 (b) KOH (c) O2 (d) Cl2 (e) KMnO4

Which would be the limiting reactant? N2 + 3H2  2NH3 3PbO2 + Cr2(SO4)3 + K2SO4 + H2O  3PbSO4 + K2Cr2O7 + H2SO4 2MnO2 + 4KOH + O2 + Cl2  2KMnO4 + 2KCl + 2H2O CH4 + 2O2  CO2 + 2H2O

H2SO4 + 2NaOH  Na2SO4 + 2H2O EXAMPLE 3-24, P.111. Find the volume in liters and in milliliters of a 0.505 M NaOH solution required to react with 40.0 mL of 0.505 M H2SO4 solution. Answer: 80 mL NaOH Use on your own risk!

CaCO3 + 2HCl  CaCl2 + CO2 + H2O b 71. What mass of calcium carbonate, CaCO3, is required to react with 100. mL of 2.00 M HCl solution? (a) 5.00 g (b) 10.0 g (c) 15.0 g (d) 20.0 g (e) 23.0 g

2HCl + Ba(OH)2  BaCl2 + 2H2O a 72. What volume of 0.130 M HCl solution will just react with 0.424 gram of Ba(OH)2? (a) 38.1 mL (b) 32.6 mL (c) 24.1 mL (d) 18.6 mL (e) 96.7 mL

(a) 0.50 M (b) 0.10 M (c) 0.20 M (d) 0.40 M (e) 0.050 M Na2CO3 + H2SO4  Na2SO4 + CO2 + H2O e 73. If 40.0 mL of H2SO4 solution reacts with 0.212 gram of Na2CO3, what is the molarity of the H2SO4 solution? (a) 0.50 M (b) 0.10 M (c) 0.20 M (d) 0.40 M (e) 0.050 M

(a) 2.55 M (b) 6.84 M (c) 8.62 M (d) 9.78 M (e) 11.84 M a 59. Calculate the molarity of a solution that contains 70.0 g of H2SO4 in 280. mL of solution.

(a) 75.0 M (b) 0.043 M (c) 33.1 M (d) 0.067 M (e) 0.0750 M e 67. Calculate the molarity of the resulting solution if enough water is added to 50.0 mL of 4.20 M NaCl solution to make a solution with a volume of 2.80 L. Chemistry is fun!