Dilution of a solution (New)

• To determine the final temperature of the solution

• To calculate the volume of stock solution needed for a desired concentration

• To measure the pH of the solution

• To find the density of the solution

Which piece of equipment is essential for accurately measuring the volume of a stock solution during dilution?

• Beaker

• Pipette

• Burette

• Test tube

Why is it important to use a volumetric flask in the dilution process?

• It is cheaper than other glassware

• It ensures precise measurement of the final solution volume

• It can be used to heat the solution

• It is easier to clean

What is the role of the meniscus in measuring liquid volumes in a volumetric flask?

• It helps in determining the color of the solution

• It indicates the correct volume when it touches the calibration mark

• It shows the temperature of the liquid

• It is used to measure the pH level

What should be done after adding the solvent to the volumetric flask to ensure the solution is properly mixed?

• Heat the solution

• Shake the flask vigorously

• Gently mix the solution

• Leave it to settle overnight

Which safety precaution is necessary when handling chemicals during the dilution process?

• Wearing sunglasses

• Using personal protective equipment (PPE)

• Listening to music

• Eating food

Why is it important to label the diluted solution with the concentration and date?

• To make it look professional

• To ensure the solution is used correctly and safely

• To prevent evaporation

• To increase the solution's shelf life

What is the main reason for using calibrated glassware in the dilution process?

• To save time

• To ensure accurate measurements

• To reduce costs

• To make the process easier

If you need to prepare 500 mL of a 0.1 M solution from a 1 M stock solution, what volume of the stock solution is required? Hint: Use the formula, M₁V₁ = M₂V₂

• 50 mL

• 100 mL

• 10 mL

• 5 mL

What is the first step in the dilution process?

• Mix the solution thoroughly

• Calculate the needed volumes using the dilution formula

• Add solvent to the flask

• Label the solution