1.

The molality of pure of the solution containing 2.8 % mass volume solution of potassium Hydroxide is

Answer»

2.8% by mass means 2.8 G in 1l soln.

molarity=moles/volume(LITER).

MOLAR mass of KOH=39+16+1=56

moles=2.8/56=0.05

molarity=0.05/1=0.05



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