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Calculate the strength in g L^(-1), mola...

Calculate the strength in `g L^(-1)`, molarity and normality of 30 volume perhydrol.

Text Solution

Verified by Experts

30 volume perhydrol `(H_2O_2)` means, 1 L of the solution produces `30 L` of `O_2` at STP (1 atm)
22.4L of `O_2` at STP (1 atm) is produced from = `68 g H_2O_2`
30 L of `O_2`at S.T.P is produced from `= (68 xx 30)/(22.4) = 91.07 H_2O_2`
`therefore` Strength of the solution `= 91.07 g H_2O_2`
Volume strength = `11.2 xx " Molarity "`
`therefore "Molarity" = ("Volume strength")/(11.2) = 30/11.2 = 2.68 M`
Volume strength =`5.6 xx " Normality"`
`therefore `Normality `= ("Volume strength")(5.6) = 30/5.6 = 5.36 N`
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