Question

While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.​

Answer 1

Explanation:

Answer :-

1. In the process of dilution of concentrated sulphuric acid with water, very large amount of heat is liberated This process is highly exothermic.

2. In order to prevent this, the required amount of water is taken in a glass container and small quantity of concentrated sulphuric acid at a time is added with constant stirring So, only a small amount of heat is liberated at a time.

Answer 2

Answer:

this is because when water is added to acid, it is an exothermic reaction. acid becomes acidic in nature when hydronium ion are produced which is possible only when acid is mixed with water. Thus  water is added slowly into acid so that less amount of acid is produced (due to less no. of hydronium ions produced) than when water is added to acid.

Explanation:

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