What is the molar concentration of 0.20 mol of potassium hydroxide in 0.75 L of solution?

The concentration of KOH that have 0.2 moles present in 0.75L is 0.26mol/L

To solve this problem, we can use concentration formula or mole concept. I would use the formula because it is the fastest way around this and since this is most likely going to be an MCQ question, you don't need to show your working.

Data given;

The formula is given as

This shows that it basically the ratio between the number of moles to the volume of the substance.

The molar concentration of KOH is approximately 0.27mol/L

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Molar concentration of potassium hydroxide = 0.27 mol / liter (Approx)

Explanation:

Given:

Moles of solute = 0.20 mol

Amount of solution = 0.75 liters

Find:

Molar concentration of potassium hydroxide = ?

Computation:

⇒ Molar concentration = Moles of solute / Amount of solution

⇒ Molar concentration of potassium hydroxide = 0.20 mol / 0.75 liters

⇒ Molar concentration of potassium hydroxide = 0.266666667 mol / liter

⇒ Molar concentration of potassium hydroxide = 0.27 mol / liter (Approx)

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since electrons are negative the answer is neagtaive