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CP Chemistry – Unit 13 Worksheet 3
Neutralization Reactions
Neutralization occurs when hydrogen ions from an acid combine with hydroxide
ions from a base to produce water.
1. A 25.0 mL sample of HNO3 solution of unknown concentration is exactly
neutralized by titration with 22.7 mL of 0.200 M NaOH solution. Calculate the
molarity of the HNO3 solution.
a. Neutralization Reaction:
b. Calculations:
2. A 25.0 mL sample of KOH is neutralized by 15.0 mL of 0.100 M HCl. Calculate the
molarity of the potassium hydroxide.
a. Neutralization Reaction:
b. Calculations:
3. What volume of a 0.100 M HCl solution is needed to neutralize 25.0 mL of a 0.350
M NaOH solution?
a. Neutralization Reaction:
b. Calculations:
Modeling Chemistry
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U13 ws 3 2012
4. What volume of 0.175 M HCl is needed to exactly neutralize 25.0 mL of 0.150 M
KOH solution?
a. Neutralization Reaction:
b. Calculations:
5. A student uses 22 mL of 0.20 M Ca(OH)2 to neutralize a 30. mL sample of HI.
Calculate the molarity of the hydroiodic acid.
a. Neutralization Reaction:
b. Calculations:
6. An Interesting Problem: A lab team places 0.25 g of an unknown solid acid in an
Erlenmeyer flask. They neutralize the solid acid with 15 mL of 0.210 M NaOH.
One mole of the acid reacts with one mole of the base.
a. Calculate the moles of unknown solid acid.
b. Calculate the molar mass of the acid.
Modeling Chemistry
2
U13 ws 3 2012