To avoid splattering and ensure accuracy, pour the deionized water along the side of the beaker while stirring with the glass rod. This technique keeps the solution level and prevents overflow.
Sodium bicarbonate, commonly known as baking soda, is a versatile compound used in cooking, cleaning, and even experimental research. This step‑by‑step protocol shows how to prepare a 0.5 M (0.5 Molar) sodium bicarbonate solution in a 250 ml volumetric flask with precision and safety.
The required mass is determined by the formula:
Mass (g) = (Desired Concentration × Molecular Weight × Desired Volume) ÷ 1000
For a 0.5 M solution, the molecular weight of NaHCO₃ is 84.01 g mol⁻¹. Using a 250 ml final volume:
0.5 × 84.01 × 250 ÷ 1000 ≈ 10.5 g
Accurately weigh approximately 10.5 g of sodium bicarbonate on the analytical balance and transfer it to a clean beaker.
Slowly add about 200 ml of deionized water to the beaker, pouring along the side to minimize splashing. Gently swirl the mixture to aid dissolution.
Use a glass rod to stir the solution until all solid particles have dissolved completely, ensuring a clear, homogenous mixture.
Pour the dissolved solution into the 250 ml volumetric flask. Fill the flask with deionized water up to the calibration mark, then seal and shake thoroughly to ensure uniformity.
For additional safety, wear gloves and eye protection when handling chemicals. Store the prepared solution in a tightly sealed container at room temperature.
Learn more about the uses of sodium bicarbonate on Blurtit.com.
By following these precise steps, you can confidently prepare a 0.5 M sodium bicarbonate solution suitable for laboratory experiments, culinary applications, or household uses.
