Chemistry
(i) What is the atomicity of chlorine.
(ii) Name the compound formed when the above mentioned gas reacts with iron. Give equation.
(iii) Zinc sulphate reacts with sodium hydroxide first a little then in excess. Write a balanced equation for the two reactions with different conditions.
Related Questions
Correct the following statements and rewrite them :
(i) Sodium reacts with chlorine to form sodium chloride.
(ii) The electrolysis of lead bromide liberates lead and bromine.
(iii) Copper sulphate crystals are dehydrated by sulphuric acid.
(iv) Calcium nitrate reacts with sodium sulphate to form calcium sulphate.
(v) Metals of IA group are called alkaline earth metals.
Write ionic reaction at the electrodes during the electrolysis of :
(i) copper II sulphate solution with copper electrodes,
(ii) acidulated water.
If a crop of wheat replaces 30 kg of nitrogen per hectare of soil, what mass of the fertilizer calcium nitrate would be required to replace the nitrogen of a 5-hectare field ?
(at wt. N = 14, O = 16, Ca = 40)
(i) Oxygen oxidises ethyne to produce 8.4 litres of carbon dioxide at STP. Calculate the volume of ethyne used in this reaction.
2C2H2 + 5O2 ⟶ 4CO2 + 2H2O
(ii) A2B is the empirical formula of a compound which has vapour density 25. If atomic weight of A and B are 10 and 5 respectively. Find it's molecular formula.