Chemistry
Name the gas evolved when the following reaction takes place.
(a) Dilute hydrochloric acid to zinc sulphide.
(b) Zinc sulphide ore is heated in a regular supply of air.
Related Questions
4.2 grams of magnesium carbonate is decomposed by heating according to the question.
MgCO3 ⟶ MgO + CO2
Calculate the following
(a) Volume of carbon dioxide obtained at STP.
(b) Mass of MgO formed
[Atomic weight : Mg = 24, C = 12, O = 16]
(a) Jiya was doing an experiment in which she had to dry up ammonia, but she observes that the concentrated sulphuric acid is not able to dry ammonia gas. Why is it so?
(b) Give the balanced chemical equation for the conversion of ammonia solution to an amphoteric hydroxide
Give balanced chemical equation for the following.
(a) Preparation of ethyne from (ethylene dibromide) 1, 2-di bromoethane.
(b) Ethanoic acid from ethanol.
(c) Sodium acetate from acetic acid.
Give one relevant observation for each of the following reactions.
(a) Zinc carbonate is heated.
(b) Excess of ammonia is passed through an aqueous solution of lead nitrate.
(c) Sodium hydrogen carbonate is added to nitric acid.