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The density of 3 M solution of sodium th...

The density of 3 M solution of sodium thiosulphate `(Na_(2)S_(2)O_(3))` is 1.25 g/mL. Calculate
amount of sodium thiosulphate

Text Solution

Verified by Experts

Let us consider one litre of sodium thiosulphate solution.
`therefore` wt. of the solution = density `times` volume (mL)
`" "=1.25 times 1000=1250g.`
wt. of `Na_(2)S_(2)O_(3)` present in 1 L of the solution
`" "=`molarity `times` mol. wt.
`" "=3 times 158=474 g`.
wt. % of `Na_(2)S_(2)O_(3)=474/1250 times 100=37.92%`
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