What do you observe when
(a) Iron nail is kept in copper sulphate solution for sometime.
(b) Phenolphthalein is added to sodium hydroxidee solution.
(c) Blue litmus paper is dipped in dilute hydrochloric acid.
(d) Lead nitrate is heated.
(e) magnesium ribbon is burnt in oxygen.
(f)ammonia is brought in contact of hydrogen chloride gas.
When ammonia gas reacts with hydrogen chloride, which state of matter is the product in?
(a) What must be added to sodium chloride to prepare hydrogen chloride? (b) Write the equation for the reaction which takes place in question (a). (c) What will you observe, when hydrogen chloride mixes with ammonia?