Analía Bellizzi – Chemistry Classes

Ronald Reagan Senior High School

# Titration Worksheet

#### Example:

During a titration, 24 mL of 0.15 M NaOH were used to neutralize 25 mL of an H2SO4 solution, what is the concentration of the H2SO4 1)If it takes 54 mL of 0.10 M NaOH to neutralize 125 mL of an HCl solution, what is the concentration of the HCl?  ANS: 0.0432M
NaOH + HCl → NaCl + H2O

2) If it takes 25 mL of 0.050 M HCl to neutralize 345 mL of KOH solution, what is the concentration of the KOH solution? ANS:  3.623 X 10^-3M
K
OH + HCl → KCl + H2O

3) 50 mL of 0.5 M LiOH solution to completely neutralize 65 mL of Nitric acid solution (HNO3). What is the concentration of the HNO3 solution? ANS:  0.385M
LiOH + HNO3 → LiNO3 + H2O

4) What is the concentration of ammonia solution if 25 cm3 of the base were neutralized by 20 cm3 of sulfuric acid 2.5M? ANS:4M
2 NH3 + H2SO4 = (NH4)2SO4

5) What volume of 1.5M Hydrochloric acid will neutralize 25 mL of 1M sodium carbonate? ANS:33.33 mL
Na2CO3 + 2 HCl → 2 NaCl + H2CO3

6) 7.5 mL of 0.050 M H3PO4 to neutralize 25 mL of KOH solution, what is the concentration of the KOH solution? ANS:  0.045M

3 KOH + H3PO4 → K3PO4 + 3H2O