Answer:
Step-by-step explanation:
Determine the quantity of solution you need to prepare. Let's assume you want to make 100 grams of the solution.
Calculate the mass of NaOH needed to make the solution. Since we want a 0.24% w/w solution, it means we want 0.24 grams of NaOH for every 100 grams of the solution.
Mass of NaOH = (0.24/100) * 100 = 0.24 grams
Measure out 0.24 grams of NaOH using an accurate weighing scale.
Add the measured NaOH to an appropriate container.
Add distilled water to the container, gradually while stirring, until the total mass of the solution reaches 100 grams. The water should be added in a controlled manner to ensure complete dissolution of NaOH.
Continue stirring until the NaOH is fully dissolved in the water, and the solution is homogeneous.
Once the NaOH is completely dissolved, the 0.24% w/w NaOH solution is ready for use.
Remember to handle NaOH with caution as it is a strong base and can cause harm. Use appropriate protective equipment, such as gloves and goggles, when handling NaOH.