Asked by Khaalid
Phosphate standards used to generate the calibration curve are usually made by first preparing a stock solution of known concentration, then diluting it to the required concentration.
First prepare a stock solution that is 1.00 x 10-2 M in phosphate ion. How many g of Na3PO4 would you add to a 50 mL volumetric flask to to prepare this solution?
Second, what is this concentration in ppm of phosphate?
First prepare a stock solution that is 1.00 x 10-2 M in phosphate ion. How many g of Na3PO4 would you add to a 50 mL volumetric flask to to prepare this solution?
Second, what is this concentration in ppm of phosphate?
Answers
Answered by
DrBob222
How many moles do you need to prepare the stock solution? moles = M x L = 0.01M x 0.050 L = ??
Since 0.01M in PO4^-3 is the same as 0.01M in Na3PO4, moles Na3PO4 will be the same as moles PO4^-3.
Then moles = grams/molar mass. Solve for grams Na3PO4.
Since 0.01M in PO4^-3 is the same as 0.01M in Na3PO4, moles Na3PO4 will be the same as moles PO4^-3.
Then moles = grams/molar mass. Solve for grams Na3PO4.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.