1.

1 M NaOH solution was slowly added in to 1000 mL of 183.75 g impure H_(2)SO_(4) solution and the following plot was obtained. The percentage purity of H_(2)SO_(4) sample and slope of the curve respectively are:

Answer»

`75%`
`60%`
`80%`
None of these

Solution :`1M NaOH` solution was slowly…………..
Moles of NaOH consumed when reacted with `H^(+) = 3xx1`
(because `3L` of NaOH is added with `1M` cons.)
moles of `H_(2)SO_(4)` PRESENT in sample `= 1.5`
(because every `H_(2)SO_(4)` has `2H^(+)`)
weight of `H_(2)SO_(4)` in sample `= 1.5xx98 = 147g`
`%` PURITY `= (147)/(183.75)xx100=80%`


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