Chapter 10

Question 1

Gran plot

Answer 1

A graph used to find the end point of a titration. The slope of the linear portion of the graph is related to the dissociation constant of the acid.

Question 2

Hammett acidity function

Answer 2

The acidity of a solvent that protonates the weak base, B. For dilute aqueous solutions, H approaches pH.

Question 3

indicator

Answer 3

A compound having a physical property (usually color) that changes abruptly near the equivalence point of a chemical reaction.

Question 4

indicator error

Answer 4

Difference between the indicator endpoint of a titration and the true equivalence point.

Question 5

Kjeldahl nitrogen alaysis

Answer 5

Procedure for the analysis of nitrogen in organic compounds.

Question 6

leveling effect

Answer 6

The strongest acid that can exist in solution is the protonated form of the solvent. A stronger acid will donate its proton to the solvent and be leveled to the acid strength of the protonated solvent. Similarly, the strongest base that can exist in a solvent is the deprotonated form of the solvent.

Question 7

transition range

Answer 7

For an acid-base indicator, the pH range over which the color change occurs. For a redox indicator, the potential range over which the color change occurs.