Question

Define double displacement reactions give examples

Answer 1

Explanation:

A double displacement reaction, also known as a double replacement reaction, is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.

Reactions will be in the form,

AB + CD ==> AD + BC

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Answer 2

Answer:

A reaction in which atoms or a group of ions get exchanged between two compounds or reactants is called double displacement reaction.

Explanation:

The reaction between silver nitrate and sodium chloride is a double displacement reaction. The silver trades its nitrite ion for the sodium's chloride ion, causing the sodium to pick up the nitrate anion.

AgNO3 + NaCl → AgCl + NaNO3

Here are other examples:

BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2 NaCl(aq)

HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

2Kl + Pb(NO3)2 → PbI2 + 2KNO3