You need to prepare 250.0 mL of a 1.10 M HCL solution from a 4.00 M HCL stock so

Question

You need to prepare 250.0 mL of a 1.10 M HCL solution from a 4.00 M HCL stock solution. Which type of glassware should you use to make the solution (assuming that the accuracy of the concentration is important)? How should the correct amount of stock solution be obtained? Measure out times g on a balance. Measure out times mL using a volumeetric pipet. Measure out times mL using a graduated cylinder. Based on your answer above, what is the value of x? x = How should the solution be mixed together? Fill the container to the 250 mL mark then add the correct amount of stock solution. Add the correct amount of stock solution then fill to the 250mL mark with water. Fill the container partially with water, add the correct amount of stock solution, then fill to the 250 mL mark with water. None of these are the correct way to mix the stock solution.

Explanation / Answer

1)

If accuracy is importan, use C; since it is the mos precise

2)

use x ml using volumetric pipet

3)

M!V1 = M2V2

V1 = M2V2/M1 = 1.1/4*250 = 68.75ml

x = 68.75ml

4)

choose C,

fill with water, then mix, then add up to 250 ml since V = solution not solvent!

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