Normality Problems

1. What is the normality of the following?

a. 0.1381 M NaOH

b. 0.0521 M H₃PO₄

c. 0.5781 g acid (eq wt = 187.3) in 250.0 mL of solution

d. 0.321 g sodium carbonate in 250.0 mL of solution

2. What is the molarity of the following?

a. 0.3181 N HCl

b. 0.1115 N Sr(OH)₂

c. 0.4237 g of KHP (eq wt = 204.23) in 100.0 mL of solution

3. What is the equivalent weight of the following?

a. C₆H₅COOH b. Na₂CO₃ c. H₃PO₄

4. If 25.00 mL of citric acid solution is titrated with 28.12 mL of 0.1718 N KOH, what is the concentration of citric acid? (hint: normality is a concentration unit!)

5. If 31.87 mL of base is required in the standardization of 0.4258 g of KHP (eq wt = 204.23), what is the normality of the base?

6. What is the normality of an acid if 21.18 mL were needed to titrate 0.1369 g Na₂CO₃?

7. What is the equivalent weight of a base is 0.2131 g required 43.71 mL of 0.0132 N acid?

8. What is the %acid (eq wt = 173.8) if 20.07 mL of 0.1100 N base were required to neutralize 0.7231 g of sample?

Solutions

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