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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

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5M means 5moles of KOH in 1L of solution. 5 moles of KOH =`5 xx 56g= 280g`
Volume of solution containing 280g 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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