Acids, bases and buffers

Question 1

alkali

Answer 1

a soluble base which releases OH- ions

Question 2

bronsted-lowry acid

Answer 2

a proton donor

Question 3

bronsted lowry base

Answer 3

a proton acceptor

Question 4

conjugate acid base pair

Answer 4

two species which are interconverted via the transfer of a proton

Question 5

dibasic acid

Answer 5

an acid which donates two moles of H+ ions per mole of acid

Question 6

end point

Answer 6

point in a titration where there are equal concentrations of the weak acid and conjugate forms of the indicator

Question 7

equivalence point

Answer 7

point in a titration where the volume of one solution has reacted exactly with the volume of another solution

Question 8

Ka

Answer 8

the equilibrium constant for a weak acid

Question 9

Kw

Answer 9

the ionic product of water - represents the dissociation of water into H+ and OH-

Question 10

monobasic acid

Answer 10

an acid which donates one mole of H+ ions per mole of acid

Question 11

salt

Answer 11

produced when the H+ ion of an acid is replaced with a positive metal ion or ammonium ion

Question 12

s

strong acid

Answer 12

an acid which completely dissociates in an aqueous solution

Question 13

weak acid

Answer 13

an acid which partially dissociates in an aqueous solution

Question 14

titration curve

Answer 14

a graph which shows the change in pH over the course of a titration

Question 15

vertical section

Answer 15

vertical part of a titration curve, contains the equivalence point for the titration - very large change in pH but a small change in the volume of acid or alkali added