Question

10.0 g of potassium hydroxide was used to prepare 100mL of solution. What was the molarity of this solution? A) 14 .03M B) 2.50M C) 1.78M D) 0.50

Answer 1

Answer:

c)1.78

We know that,

Molarity is equal to number of moles divided by total volume of the solution

Also

no. of moles is equal to mass by molar mass

putting the values and molar mass for potassium hydroxide is 56 g per mol