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
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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List the cations and anions of the substances given in the table.
Kerala Board Chemistry Part II