Explain how you would prepare the following dilute solutions from the more concentrated ones:
a. 200ml of .500M HCL from a 6.00M HCL solution.
mL x M = mL x M
To prepare a dilute solution, you will need to calculate the volume of the concentrated solution needed and then add an appropriate amount of solvent (in this case, water) to reach the desired concentration.
For example, to prepare 200 mL of a 0.500 M HCl solution from a 6.00 M HCl stock solution, you can follow these steps:
1. Use the formula: C1V1 = C2V2, where C1 and V1 are the initial concentration and volume of the stock solution, and C2 and V2 are the desired concentration and volume of the final solution.
2. Rearranging the formula, you can solve for V1 (the volume of the stock solution you need to use):
V1 = (C2 * V2) / C1
Substituting the given values, V2 = 200 mL, C2 = 0.500 M, and C1 = 6.00 M, we get:
V1 = (0.500 M * 200 mL) / 6.00 M = 16.67 mL
So, you need to measure 16.67 mL of the 6.00 M HCl stock solution.
3. Next, add the 16.67 mL of the 6.00 M HCl stock solution to a container.
4. Finally, add water to the container until the total volume reaches 200 mL. You can use a graduated cylinder or pipette to carefully add the water.
By following these steps, you will have prepared 200 mL of a 0.500 M HCl solution from a 6.00 M HCl stock solution.