what volume of 5500 ppm solution would you need to make a 50.00 ml solution at t
ID: 477699 • Letter: W
Question
what volume of 5500 ppm solution would you need to make a 50.00 ml solution at the low end of the stated range, 100 ppm? Please assist with part 1 and 2 as they are related. (circle day): Mon. Lab your work (neathy and clearly labeled) on this page. This assignment is worth 4 points of your lab for a unit Pay strict attention to significant figures and rounding. Make sure everynumber in your calculations has label. Read over the introduction and the solution Preparation-section of the calibration curve study lab handout, available on Blackboard. Since we are working in ppm, which is a concentration given in mass, rather than moles, you can complete the solution preparation calculations even without knowing which solid you are assigned. This is what you are doing in Q1-5, below. 1. What volume ofssooppm solution would you need to make a 50.00 mL solution at the low end of the stated range, 100ppm? 2. The lab volumetric pipets in whole mLi (1mL 2mL etc up to 10mL and then in volumes of s possible which pipet would be the most appropriate to prepare a solution as close as Show to 100ppm? If you use that pipet, what be the actual of the 50.00ml solution? calc) will Pipet chosen: 3. what top of the range pipets should you to prepare other standards you need? Keep in mind the at least is 1600ppm use have standards that reasonably evenly spaced. You need the stand you should resulting more is fine. No are concentration of the 5000mL needed, but you should report the solution, assuming the stock 5500 andExplanation / Answer
(1) According to law of dilution MV = M'V'
Where M = Molarity of stock = 5500 ppm
V = Volume of the stock = ? mL
M' = Molarity of dilute solution = 100 ppm
V' = Volume of the dilute solution = 50.0 mL
Plug the values we get , V = (M'V') / M
= ( 100x50.0) / 5500
= 0.91 mL
So The volume of 5500 ppm solution required is 0.91 mL
(2) The pipett choosen is 1 mL pipette
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