What volume of 18 M HCl would be used to make a 250 mL diluted solution that is 5.1 M?
To calculate the volume of 18 M HCl needed to make a 250 mL solution that is 5.1 M, we can use the dilution formula:
C1V1 = C2V2
Where:
C1 = initial concentration (18 M)
V1 = initial volume (unknown)
C2 = final concentration (5.1 M)
V2 = final volume (250 mL)
By plugging in the values we know:
(18 M)V1 = (5.1 M)(250 mL)
Now, solve for V1:
V1 = (5.1 M)(250 mL) / 18 M
V1 = 70.8333 mL
Therefore, you would need to use approximately 70.8333 mL of 18 M HCl to make a 250 mL solution that is 5.1 M.