Answer to Question #154767 in General Chemistry for Olivia

Question

how do I make 250 ml of 0.50 M sodium bicarbonate solution

Answer 1

1. Determine the amount of sodium bicarbonate required by filling in this formula: (desired concentration * molecular weight * desired final volume)/1000 ml = Amount of compound needed to dissolve in water. In this case, the desired concentration is 0.5, the molecular weight of sodium bicarbonate is 40 g, and the desired final volume is 250 ml. The formula would look like this: 0.5_(40 g)_(250 ml)/(1000 ml) = 5g
2. Weigh approximately 5 g of sodium bicarbonate with the balance and put into the beaker.
3. Add deionized water down the side of the beaker and swirl to mix the contents.
4. Stir using a glass rod to dissolve the solid completely.
5. Transfer the solution into the volumetric flask and make up to the mark on the volumetric flask with deionized water. Shake the flask thoroughly to mix the contents.