Complete the following chemical reactions.
`(i) PbS(s)+H_(2)O_(2)(aq) to `
`(ii) MnO_(4)^(-)(aq)+H_(2)O_(2)(aq) to `
`(iii) CaO(s)+H_(2)O(l) to `
`(iv) AlCl_(3)(s)+H_(2)O(l)to `
`(v) Ca_(3)N_(2)(s)+H_(2)O(l)to `
Classify the above into (a) hydrolysis, (b) redox and (c) hydration reactions.

Explanation

`(i) PbS(s) + 4H_(2)O_(2) (aq) to PbSO_(4) (s) + 4H_(2)O (l)`
`(ii) 2MnO_(4)^(-) (aq) + 5H_(2)O_(2) (l) + 6H^(+) (aq) to 2Mn^(2+)(aq) + 8 H_(2)O(l) + 5O_(2)(g)`
`(iii)CaO (s) + H_(2)O (g) to Ca(OH)_(2)(aq)`
`(iv) AlCl_(3) (g) + 3H_(2)O(l) to Al(OH)_(3)(s) + 3HCl (aq)`
`(v) Ca_(3)N_(2) (s) + 6H_(2)O(l) to 3Ca(OH)_(2) (aq) + 2NH_(3)(aq)`
(a) Hydrolysis reactions : (iii), (iv), (v). (b). Redox reactions : (i) and (ii).