Question

A sample of 0.0255 mol potassium hydroxide, KOH, was dissolved in water to yield 0.0100 L of solution. What is the molarity of the solution?

Answer 1

To calculate the molarity of the solution, we use the formula:

Molarity (M) = moles of solute / volume of solution in liters

Given:
moles of potassium hydroxide (KOH) = 0.0255 mol
volume of solution = 0.0100 L

Plugging in the values:

Molarity (M) = 0.0255 mol / 0.0100 L
Molarity (M) = 2.55 mol/L

Therefore, the molarity of the solution is 2.55 M.