Question

10. How many grams of KOH are needed to make a 2.00 M solution?

Answer 1

Answer: 28 grams

Explanation:

2molarity/L= Mass of KOH/ 56g/molarity multiplied by 250ml multiplied by 1000 *Hope it helped*

Answer 2

Answer: The mass of KOH needed is 28 grams

Step-by-step explanation:

Molarity: It is defined as the number of moles of solute present in one liter of solution.

In this question, the solute is KOH.

The formula used: M = N/V

wb = mass of solute KOH = ?

mb = molar mass of solute KOH = 56 g/mole

V = volume of solution = 250 ml

Molarity = 2.00 M = 2.00 mole/L

Now put all the given values in the above formula, and we get the mass of KOH.

Now put all the given values in the above formula, and we get the mass of KOH.

Therefore, the mass of KOH needed is 28 grams.