Acid–base neutralization reactions Knowledge-Based Download PDF

Questions

1. 1.

   What mass of potassium sulfate, $\text{K}_2\text{SO}_4$, is produced when 200 mL of a 0.500 M $\text{H}_2\text{SO}_4$ solution is completely neutralized by an excess of $\text{KOH}$? (Molar masses: $\text{K} = 39.1\text{ g/mol}$, $\text{S} = 32.1\text{ g/mol}$, $\text{O} = 16.0\text{ g/mol}$)

   • A) 8.72 g
   • B) 13.6 g
   • C) 34.9 g
   • D) 17.4 g
2. 2.

   What mass of water is produced when 150 mL of a 0.200 M $\text{H}_3\text{PO}_4$ solution is completely neutralized by an excess of $\text{KOH}$? (Molar masses: $\text{H} = 1.0\text{ g/mol}$, $\text{O} = 16.0\text{ g/mol}$)

   • A) 0.54 g
   • B) 1.62 g
   • C) 1.08 g
   • D) 2.16 g
3. 3.

   What is the molar concentration of a sulfuric acid solution, $\text{H}_2\text{SO}_4$, if a 25.0 mL sample requires exactly 37.5 mL of a 0.200 M sodium hydroxide solution, $\text{NaOH}$, for complete neutralization?

   • A) 0.150 M
   • B) 0.300 M
   • C) 0.600 M
   • D) 0.133 M
4. 4.

   What mass of solid calcium hydroxide, $\text{Ca(OH)}_2$, is required to completely neutralize 250 mL of a 0.400 M $\text{HCl}$ solution? (Molar masses: $\text{H} = 1.0\text{ g/mol}$, $\text{O} = 16.0\text{ g/mol}$, $\text{Ca} = 40.1\text{ g/mol}$)

   • A) 7.41 g
   • B) 14.8 g
   • C) 3.71 g
   • D) 1.85 g
5. 5.

   What volume of a 0.250 M $\text{Ba(OH)}_2$ solution is required to completely neutralize 50.0 mL of a 0.300 M $\text{HNO}_3$ solution?

   • A) 120.0 mL
   • B) 60.0 mL
   • C) 15.0 mL
   • D) 30.0 mL