Titration Problems

8 Questions  I  By Kwchiro on April 12, 2009
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.
B.
C.
D.
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.
B.
C.
D.
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.
B.
C.
D.
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.
B.
C.
D.
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.
B.
C.
D.
6.  What is the purpose of an indicator in the solution with the unknown concentration?
A.
B.
C.
7.  The equation for the neutralization reaction between solutions of potassium hydroxide and hydrochloric acid is:
A.
B.
C.
D.
E.
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.
B.
C.
D.
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Quiz Comments (1)
Great site. Could you help with this more complex one? - A 0.9030g sample 0f Z(OH)2- an alkaline earth metal hydroxide, and 20.0 mL of 2.00M HCl were put into a 100mL vol. flask and mixed with enough water to make 100mL of solution. A 10.0 mL aliquot of this soln. was taken and titrated with 17.64 mL of 0.05121M NaOH. What is the identity of element Z in the sample? Can't get the correct element by calculation which is Mg. Any hints? Your help is much appreciated. Thanks.
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