Ch 16: Acid-Base Titration and pH

Question 1

self-ionization of water

Answer 1

two water molecules produce a hydronium ion and a hydroxide ion by transfer of a proton

Question 2

pH

Answer 2

the Ph of a solution is defined as the negative of the common logarithm of the hydronium ion concentration (H3O+)

Question 3

acid-base indicators

Answer 3

compounds whose colors are sensitive to pH

Question 4

transition interval

Answer 4

the Ph range over which an indicator changes color

Question 5

pH meter

Answer 5

a pH meter determines the Ph of a solution by measuring the voltage between the two electrodes that are placed in the solution

Question 6

titration

Answer 6

the controlled addition and measurement of the amount of solution of known concentration required to react completely with a measured amount of a solution of unknown concentration

Question 7

equivalence point

Answer 7

the point at which two solutions used in a titration are present in chemically equivalent amounts

Question 8

end point

Answer 8

the point in a titration at which an indicator changes color is called the end point of the indicator

Question 9

standard solution

Answer 9

the solution the contains the precisely known concentration of a solute

Question 10

primary standard

Answer 10

a highly purified solid compound used to check the concentration of the known solution in a titration