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A 5.0 M solution of KOH in water contain...

A 5.0 M solution of KOH in water contains 22.00% by mass of KOH. Calculate the density of the solution. `("Molar mass of KOH=56 g mol"^(-1))`

Text Solution

Verified by Experts

5 means 5 moles of KOH in 1L solution.
5 moles of KOH `=5 xx 56 =280g`
Volume of solution containing 280 g KOH=1000mL
Mass of solution containing 280g KOH `=(100)/(22) xx 280 =1272.7g`
Density of KOH solution `=("Mass")/("Volume")=(1272.7g)/(1000mL)="1.2727 gmL"^(-1)`
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