Answer to Question #118382 in General Chemistry for Day

Question

1- a- How do you prepare 0,1 N H3PO4 solution using 80% H3PO4 stock solution? (d=1,633 g/mL, H:1, O:16, P:31).

b- 5 mL of this solution (0,1 N H3PO4) diluted to 1000 mL. What is the % (w/v) and the ppm concentration of the final solution?

2- a- How do you prepare 12% (w/v) tribasic magnesium citrate solution using magnesium citrate tribasic nonahydrate? (Mg3(C6H5O7)2 · 9H2O MW 613.25)

b- 10 mL of this solution (12% (w/v) tribasic magnesium citrate) added to a 90 Ml 6% (W/V) tribasic magnesium citrate solution. What is the final % (w/v), M and N concentration?

Answer 1

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