Solution of tribasic sodium phosphate
A scientist wants to make a solution of tribasic sodium phosphate, Na_3PO_4, for a laboratory experiment. How many grams of Na_3PO_4 will be needed to produce 525 mL of a solution that has a concentration of Na^+ ions of 1.20 M?
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Question: Commercial grade HCl solutions are 39% by mass with a density of 1.20 g/ml. What is the molality of the solution?
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You require a buffer with pH of 4.50. You have 1.00L of a solution of 1.80M acetic acid. How many grams of solid sodium acetate (NaC2H3O2, molar mass 82.0g/mol) must be added to give the pH of 4.50? The pKa of acetic acid is 4.74. Show all your work
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