Clare V.

asked • 05/11/18

Chem Question

Calculate the ratio of moles of acid to moles of base to create a 750 mL buffer solution with pH = 4.2 using acetic acid, CH3OOH, and acetate CH3COO. The ka for acetic acid is 1.8 x 10^(-5). The given answer is 0.288 moles of base to 1 mole of acid. How do I get to this answer? Thank you so much!

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