Question

8.Give an equation for double displacement reaction.

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Answer 1

Explanation:

When solutions of sodium carbonate and hydrochloric acid are mixed, the equation for the hypothetical double displacement reaction is: Na2CO3 + 2 HCl → 2 NaCl + H2CO3 Bubbles of a colorless gas are evolved when these solutions are mixed.

Answer 2

Answer:

Definition

A chemical reaction in which there is an exchange of ions between the reactants to form the new products is called double displacement reaction.

Examples :-

$\bf \small \ Na_2SO_4 + Bacl_2 \rightarrow \: BaSO_4 + 2NaCl$

$\bf \small \ Pb(NO_3)_2 + 2Kl \rightarrow \: Pbl_2 +2K(NO_3)_2$