1.

Balance the following equation : Kl + H_(2)SO_(4) + H_(2)O_(2) to K_(2)SO_(4) + I_(2) + H_(2)O

Answer»

Solution :The given equation can be split into following probable partial equations.
`H_(2)O_(2) to H_(2)O + O`………….(i)
`Kl + H_(2)O + O to KOH + I_(2)`…….(ii)
`KOH + H_(2)SO_(4) to K_(2)SO_(4) +H_(2)O`………(iii)
On balancing these partial equations by hit and trial method, we GET:
`H_(2)O_(2) to H_(2)O + O`........(iv)
`2Kl + H_(2)O + O to 2KOH + I_(2)`......(v)
`2KOH + H_(2)SO_(4) to K_(2)SO_(4) + 2H_(2)O`.......(vi)
The INTERMEDIATE SPECIES O and KOH can be cancelled simply by ADDING these equations.
`H_(2)O_(2) to H_(2)O + O`
`2Kl + H_(2)O + O to 2KOH + I_(2)`
`overset(2KOH + H_(2)SO_(4) to K_(2)SO_(4) + 2H_(2)O)underset(2Kl + H_(2)SO_(4) +H_(2)O_(2) to K_(2)SO_(4) + I_(2) + 2H_(2)O) (------------)`


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