# Titration Problems

8 Questions  I  By Kwchiro
The concentration of NaOH is 0. 5 M, if 30 ml is needed to titrate 35 mL of acid, what is the concentration of the acid?

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 1 The concentration of NaOH is 0.5 M, if 20 ml is needed to titrate 35 mL of acid, what is the concentration of the acid?
 A. 0.875 M of acid
 B. 0.0029 M of the acid
 C. 0.29 M of the acid
 D. 0.00875 M of acid
 2 A 15.5 mL sample of 0.215 M KOH was titrated with a weak acid. It took 21.2 mL of the acid to reach the equivalence point. What is the molarity of the acid?
 A. 0.157 M acid
 B. 0.29 M acid
 C. 0.0157 M acid
 D. 0.029 M acid
 3 If 20.0 mL of 0.100 M HCl are titrated with 19.5 mL of an NaOH solution. What is the molarity of the NaOH solution?
 A. 0.0975 M NaOH
 B. 0.0103 M NaOH
 C. 0.103 M NaOH
 D. 0.975 M NaOH
 4 The concentration of HCl, a strong acid is 0.5 M. If 20 ml HCl is needed to titrate 40 mL of NaOH, what is the concentration of NaOH?
 A. 0.25 M NaOH
 B. 0.5 M NaOH
 C. 1 M NaOH
 D. 0.1 M NaOH
 5 The concentration of LiOH is 0.50 M. If 25 mL of LiOH is needed to titrate 40 mL of HNO3 (nitric acid) what is the concentraiton of HNO3?
 A. 0.03125 M HNO3
 B. 0.8 M HNO3
 C. 0.3125 M HNO3
 D. 0.08 M HNO3
 6 What is the purpose of an indicator in the solution with the unknown concentration?
 A. It tells when there is enough acid in the solution.
 B. It tells when the equivalence point is obtained.
 C. It tells when there is enough base in the solution
 7 The equation for the neutralization reaction between solutions of potassium hydroxide and hydrochloric acid is:
 A. H+ (aq) + OH- (aq) --> H2O
 B. KOH (aq) + HCl (aq) -->H2O (l) + KCl
 C. POH (aq) + HClO (aq) --> H2O (l) + PClO (aq)
 D. KOH (aq) + HCl (aq) -->K2Cl (aq)+ H2O (l)
 E. KOH (aq) + HCl (aq) --> K2Cl (aq)+ H2O (l) + H+
 8 Calculate the molarity of a HCl solution if 25.0 mL of the solution is  neutralized by 15.5 mL of 0.800 M NaOH:
 A. 0.248 M
 B. 0.496 M
 C. 1.29 M
 D. 0.645 M
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