PH And Indicators

Question 1

Ionic product of water

Answer 1

Kw = [H+][OH-]

Question 2

pH

Answer 2

-log10[H+] where the square brackets indicate concentration in moles per litre

Question 3

The pH of a solution

Answer 3

Is the negative logarithm to the base 10 of the hydrogen ion concentration measuees in moles per litre

Question 4

Strong acid

Answer 4

Good proton donor

Question 5

Week acid

Answer 5

Poor proton donor

Question 6

Ka

Answer 6

Ka= [H+][A-] ÷ [HA]

Question 7

Strong base

Answer 7

Good proton acceptor

Question 8

Weak base

Answer 8

Poor proton acceptor

Question 9

Acid-Base indicator

Answer 9

Is a substance that changes colour according to the PH of the solution in which it is placed

Question 10

The range of an idicator

Answer 10

The pH interval over which there is a clear change of colour of that indicator