Acids and Bases

Question 1

Acids

Answer 1

Proton donor

Question 2

Strong Acids or Bases

Answer 2

Fully dissociate into their ions

Question 3

Weak Acids or Bases

Answer 3

Do not fully dissociate - only a small proportion of the acidic ions come off

Question 4

Proton Donor

Answer 4

Can donate H+ ion

Question 5

Monoprotic Acid

Answer 5

An acid that can donate one hydrogen ion

Question 6

Polyprotic Acid

Answer 6

An acid that can donate more than one hydrogen ion

Question 7

Base

Answer 7

Produce OH- in a solution or neutralises acid

Question 8

Bronsted-Lowry Definition

Answer 8

Acids donate a proton and bases accept a proton

Question 9

Amphiprotic Substance

Answer 9

A substance that can act as an acid or base

Question 10

pH

Answer 10

Measures the acidity of a solution; values range from 0-14

Question 11

Buffer

Answer 11

Used to maintain a neutral pH and/or guard against rapid changes to pH

Question 12

Buffer Solutions

Answer 12

Consist of a weak acid and its conjugate base or a weak base and its conjugate acid in a 50/50 ratio

Question 13

Titration

Answer 13

Process used to determine the unknown concentration of a solution

Question 14

Equivalence Point

Answer 14

Indicator changes colour, titrant has neutralised analyte solution

Question 15

Half Equivalence Point

Answer 15

Half the weak acid has turned into the conjugate base, pH=pKa

Question 16

Weak Acid-Strong Base Titration Curve

Answer 16

Initial pH >7, gradually rising portion of curve (buffer region) then steep rise to equivalence point, pH at equivalence >7

Question 17

Weak Base-Strong Acid Titration Curve

Answer 17

Initial pH<7, gradually decreasing portion of curve (buffer region) then steep fall to equivalence point, pH at equivalence <7