how would you make 1 molar solution using 4 molar solution and pure water?
To make a 1 molar solution from a 4 molar solution and pure water, you need to dilute the 4 molar solution by adding water. Here's how you can do it:
Step 1: Determine the volume of the 1 molar solution you want to make.
Let's assume you want to make 1 liter of a 1 molar solution.
Step 2: Use the formula for dilution:
C1V1 = C2V2
C1 = initial concentration of the stock solution (4 Molar)
V1 = initial volume of the stock solution (unknown)
C2 = final concentration of the diluted solution (1 Molar)
V2 = final volume of the diluted solution (1 liter)
Step 3: Solve for V1.
Plug the values into the formula:
(4 Molar) x V1 = (1 Molar) x (1 liter)
V1 = (1 Molar) x (1 liter) ÷ (4 Molar)
V1 = 0.25 liters or 250 mL
Step 4: Measure 250 mL of the 4 molar solution.
Use a graduated cylinder or pipette to accurately measure 250 mL of the 4 molar solution.
Step 5: Transfer the 250 mL of the 4 molar solution into a 1 liter volumetric flask.
The volumetric flask is used to accurately measure and contain the desired volume of the solution. Add the 250 mL of the 4 molar solution into the flask.
Step 6: Add sufficient water to the volumetric flask.
Fill the flask with water up to the 1 liter mark. Make sure to mix the solution thoroughly by swirling the flask to ensure proper dilution.
Step 7: Label and store the solution.
Label the flask with the solution's details, including the concentration and any other relevant information. Store the solution in a suitable container and make sure to keep it properly labeled and stored.
That's it! You have now prepared a 1 molar solution by diluting a 4 molar solution using water.