Question

calculate the molarity of KoH in the solution prepared by dissolving its 10g in enough water to form 750 ml of solution ​

Answer 1

volume of solution= 0.75 litres

molar mass of KOH = 39 + 16 + 1 => 56 grams per mole.

Hence, 10 grams is 10/56 => 0.178 moles (approx.)

molarity = (moles of solute)/litres of solution

=> 0.178/0.75 => 0.237 M

Hence, the molarity of the solution is 0.24 M (molar) approximately.