Question

Give reason for the following statements:
(a) Tap water conducts electricity whereas distilled water does not.
(b) Dry HCl does not turn blue litmus red whereas dilute HCl does.
(c) For a dilution of acid, acid is added into water and not water into acid.

Answer 1

a) tap water have some impurities of salts like mg while distilled water only contain H2O molecules so tap water conducts electricity while distilled water doesn't
b) an acid should be moist to change blue litmus to red because ionization takes place only in the presence of water by which h+ ions get activated.
c) because when we add water to acid it produces so much heat that the acid could splash out and may harm our face or body

Answer 2

Answer:

a) tap water have some impurities of salts like mg while distilled water only contain H2O molecules so tap water conducts electricity while distilled water doesn't.

b) an acid should be moist to change blue litmus to red because ionization takes place only in the presence of water by which h+ ions get activated.

c) because when we add water to acid it produces so much heat that the acid could splash out and may harm our face or body.