Chemistry
What property of Sulphuric acid is exhibited in each of the following cases:
(a) In the preparation of HCl gas when it reacts with Sodium chloride.
(b) When concentrated Sulphuric acid reacts with Copper to produce Sulphur dioxide gas.
Answer
(a) Non-volatile nature
Reason — Concentrated sulphuric acid has a high boiling point (338°C) and so it is considered to be a non-volatile acid. It is, therefore, used for preparing volatile acids like HCl.
(b) Oxidising property
Reason — The oxidising property of concentrated sulphuric acid is due to the fact that on thermal decomposition, it yields nascent oxygen which oxidises metals.
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You are provided with the list of chemicals mentioned below in the box:
Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron Using suitable chemicals from the list given, write balanced chemical equation for the preparation of the salts mentioned below:
(a) copper sulphate
(b) sodium zincate
(c) ferric chloride