Study of Compounds-I Hydrogen Chloride — Chemistry STD 10 — Question

Using Sodium hydroxide solution, how would you distinguish: Iron(II) chloride from Iron (III) chloride

How will you prepare the following from nitric acid?
Ferric nitrate

Answer the following questions with respect to the electrolytic process in the extraction of aluminium:
(i) Identify the components of the electrolyte other than pure alumina and the role played by each.
(ii) Explain why powdered coke is sprinkled over the electrolytic mixture.

The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.

How ammonia occurs in nature?

Explain: Larger the atomic size, more metallic is the element.

Give reasons for Aqueous solution of ammonia conducts electricity.

Explain the following:
(a) Almost 90% of all known compounds are organic in nature.
(b) It is dangerous to burn methane in an insufficient supply of air.

How will the action of dilute hydrochloric acid enable you to distinguish between sodium thiosulphate and sodium sulphite.

Calculate the relative molecular mass of Chloroform.
(use K = 39, Cl = 35.5, O = 16, C = 12, H = 1, Na = 23, N = 14, S= 32)