Question

State reason for the following statements:
(i) Tap water conducts electricity whereas distilled water does not.
(ii) Dry hydrogen chloride gas does not turn blue litmus red whereas dilute hydrochloric acid does.
(iii) During summer season, a milk man usually adds a very small amount of baking soda to fresh milk.
(iv) For a dilution of acid, acid is added into water and not water into acid.
(v) Ammonia is a base but does not contain hydroxyl group.​

Answer 1

Answer:

i) Tap water contents dissolved ions to conduct electricity while distilled water does not.

ii) because the dry gas does not react with litmus

iii) the baking soda prevents the milk from turning acidic and coagulating

iv) adding water to acid is a very exothermic process because it contains larger volume of acid than water

v) Ammonia does not contain hydroxyl ions but it reacts with water to form ammonium ion and hydroxyl ions