3.1.12 Acids and bases

Question 1

Acid

Answer 1

proton donor

Question 2

Base

Answer 2

proton acceptor

Question 3

Alkali

Answer 3

soluble base which releases -OH ions in solution

Question 4

Acid + Alkali

Answer 4

Salt + Water

Question 5

Acid + Base

Answer 5

Salt + Water

Question 6

Acid + Carbonate

Answer 6

Salt + Carbon dioxide + Water

Question 7

Acid + Metal

Answer 7

Salt +Hydrogen

Question 8

Strong Acids

Answer 8

Completely dissociate into ions in aqueous solutions. (classic acids)

Question 9

Weak acids

Answer 9

partially dissociate into ions in aqueous solution. (organic acids)

Question 9

Weak bases

Answer 9

partially react to give ions in aqueous solution. (ammonia)

Question 10

Strong Bases

Answer 10

Completely dissociate into ions in aqueous solution. (hydroxides)

Question 10

Conjugate acid-base pair

Answer 10

Two species that transform into each other by loss or gain of a proton.

Question 11

pH

Answer 11

-log[H+]

Question 12

[H+]

Answer 12

10^(-pH)

Question 12

Kw (ionic product of water)

Answer 12

Kc * [H2O]

Question 13

Kw (in pure water)

Answer 13

[H+]^2

Question 14

Ka (acid dissociation constant)

Answer 14

[HA]

Question 15

Ka in weak acids

Answer 15

[HA]

Question 16

pKa

Answer 16

-logKa

Question 17

Ka

Answer 17

10^(-pKa)

Question 18

Equivalence Point

Answer 18

The point in a titration when the volume of one solution has reacted exactly with the volume of the second solution.

Question 19

Sa , Sb

Answer 19

pH 3 - 10

Question 20

Wa , Sb

Answer 20

pH 6 - 10

Question 21

Sa , Wb

Answer 21

pH 3 - 8

Question 22

Wa , Wb

Answer 22

no clear vertical region

Question 23

At half neutralisation point

Answer 23

pKa = pH

Question 24

Buffer

Answer 24

A solution which can resist a change in pH when small amounts of acid or base are added. Consist of a weak acid and its salt.