11.6 Carboxylic Acid — Chemistry STD 10 — Question

A green coloured carbonate.

An extremely soluble gas in water, which forms dense white fumes with ammonia solution.

Name:
a compound containing zinc in the anion

The preparation of lead sulphate from lead carbonate is a two step process (lead sulphate cannot be prepared by adding dilute sulphuric acid to lead carbonate)
Why is the direct addition of dilute sulphuric acid to lead carbonate an impractical method of preparing lead sulphate?

Name the cation that forms a red precipitate with sodium hydroxide (NaOH) which is soluble in excess NaOH.

Name the gas that has a smell of rotten eggs.

What do you understand by the terms, acid?

Give a balanced equation when dilute hydrochloric acid is added to : Calcium carbonate

Select from the list given (a to e) one substances in each case which matches the description given in parts (i) to (v). (Note : Each substance is used only one in the answer)
(a) Nitroso Iron (II) Sulphate
(b) Iron (III) chloride
(c) Chromium sulphate
(d) Lead (II) chloride
(e) Sodium chloride
(i) A compound which is deliquescent
(ii) A compound which is insoluble in cold water, but soluble in hot water
(iii) The compound responsible for the brown ring during the brown ring test of nitrate iron
(iv) A compound whose aqueous solution is neutral in nature
(v) The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution.

Reaction when an alkyl halide is treated with alcoholic potassium hydroxide.