1.

Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water and (iii) alkaline water ? Write equations wherever necessary.

Answer»

SOLUTION :`AlCl_3` : The aqueous solution containing acidic nature.
(i)`AlCl_(3(s)) + H_2O_((l)) to Al(OH)_(3(s)) + 3H_((aq))^(+) + 3Cl_((aq))^(-)`
(ii) In acidified water `H^+` ion react with `Al(OH)_3` and give `Al^(3+)` in and `H_2O`. Thus the `Al^(3+)` and `Cl^-` ion obtain from `AlCl_3` in acidified water.
(III)`AlCl_(3(s)) underset"water"OVERSET"Basic" to [Al(OH)_4]_((aq))^(-) + 3Cl_((aq))^(-)`
`[Al(OH)_4]_((aq))^(-) to AlO_(2)^(-) + 2H_2O_((l))`
KCl : KCl is a salt of strong acid and strong base and reacts with `H_2O`. The `K^+` and `Cl^-` obtain by only DISSOCIATION reaction.
`KCl_((s)) overset(H_2O)to K_((aq))^(+) + Cl_((aq))^(-)`
The aqueous solution of KCl is neutral. There is no reaction between ions in acidic/basic solution of KCl.


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