Question

please tell me the answer​

Answer 1

a) Acids have a pH of less than 7

b) Bases have a pH of more than 7

c) Neutral substances have a pH of 7

d) The more acidic a solution, the lower the pH

e) The more alkaline a solution, the higher the pH

f) Mixing an acid or base with water results in reduction in the concentration of the ions (H3O+/OH-) per unit volume

g) Higher the hydronium ion concentration, lower is the pH value.

h) When pH of mouth falls below 5.5, the acids produced in the mouth attack enamel causing tooth cavities

i) Formic acid is the present in the bee stings which can be neutralised by applying a mild base such as baking soda.

j) Distilled water will produce a green-yellow colour with universal indicator