Q. 14.4( 7 Votes )

Complete the chemical equations for the following ionisation reactions.

KCl K+ + ………..

HNO3 H+ + ……….

Mg(OH)2 ………. + 2OH

H2SO4 2H+ + ……….

NH4Cl NH+4 ……….

CaSO4 ………. + SO2–4

Answer :

Ionisation reaction involves the conversion of neutral molecules into their constituent ions (ions are charged atoms or molecules). In the above question, we can complete the ionisation reactions by breaking the given compounds into ions (cations and anions) as follows:

Note: cations are positively charged ions and anions are negatively charged ions.


KCl K+ + Cl-


KCl dissociates into potassium ion and chloride ion.


HNO3 H+ + NO3


Nitric acid ionises to give a proton and nitrate ion.


Mg(OH)2 Mg2++ 2OH


Magnesium hydroxide ionises to give magnesium ion and two hydroxide ions.


H2SO4 2H+ + SO42–


Sulphuric acid dissociates to give two protons and a sulphate ion.


NH4Cl NH+4 + Cl-


Ammonium chloride ionises to give ammonium ion and chloride ion.


CaSO4 Ca2+ + SO42-


Calcium sulphate ionises to give calcium ion and sulphate ion.


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