1. Methanol

2. Potassium hydroxide (KOH) pellets

3. Analytical balance

4. Volumetric flask (250 mL)

5. Glass stirring rod

6. Safety goggles

7. Gloves

Procedure:

Step 1: Preparation of 0.1 N KOH Stock Solution

1. Weigh accurately 0.561 grams of potassium hydroxide pellets using an analytical balance.

2. Dissolve the KOH pellets in a small amount of methanol (approximately 10-15 mL) in a beaker.

3. Transfer the dissolved KOH solution into a 250 mL volumetric flask.

4. Add more methanol to the flask until the solution reaches the 250 mL mark.

5. Mix thoroughly by swirling the flask.

Step 2: Preparation of 0.002 N Methanolic KOH Solution

1. Transfer 10 mL of the prepared 0.1 N methanolic KOH stock solution into a 1000 mL volumetric flask.

2. Add methanol to the flask until the solution reaches the 1000 mL mark.

3. Mix thoroughly by swirling the flask.

Note:

- Be sure to handle the potassium hydroxide pellets with care, as they are corrosive and can cause burns to the skin.

- Wear safety goggles and gloves to protect yourself from any splashes or spills.

- Always prepare solutions in a well-ventilated area.