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56

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A 100.0 mL sample of lactic acid has a pH of 3.38


The hydroxide ion concentration in this sample of lactic acid, expressed in scientific notation, is a.bx 10-cd mol/L. The values of a, b, c, and d are Answer

_,_,_,_


Question 

57


Question text

Statements about Titrations


  1. A titration is the progressive addition of one reagent to another.
  2. A titration involves a chemical reaction between an acid and a base.
  3. The indicator endpoint shows that chemically equivalent amounts have been brought together.
  4. A titration results in a solution with a pH of 7.0 at the equivalence point.


Regarding titrations, which statements are always true?

Select one:

A) I and II

B) I and III

C) II and III

D) I, II, III, and IV


Question 

60



Carbonic acid is most accurately described as a

Select one:

A) monoprotic weak acid

B) monoprotic strong acid

C) diprotic weak acid

D) diprotic strong acid

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