1.

The acid dissociation constant for Al(H_2 O)_(6)^(3+) is 1.4 xx10^(-5) . It suggests

Answer»

`H_2 O` molecules in the hydrated cation are much STRONGER proton donors than free SOLVENT water molecules
Ionisation`,Al(H_2 O)_(6)^(3+) _((aq)) hArrAL^(3+) _(aq)+ H_2O`
Ionisation ,
`Al (H_2 O)_(6(aq))^(3+) +H_2 O _((l)) hArrH_3 O^(+) ""_((aq)) +[Al(H_2O)_5(OH)]_((aq))^(2+)`
ItspHmightbe morethan 7.

Solution :Ionisationin (B)willnotmakeit acidof`pK_a= 1.4 xx 10^(-5)` asionsationof waterisinvolved withsaltand `K_(a ) gt gtK_(w)`
pHofsolutionwillalwaysbelessthan7.


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