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Answer 1 of 3. Once accomplished properly this provides you a solution that you could utilize for the pH 7 buffer. Pin On Ana2 Gently add potassium hydroxide in order to bring the pH by up to 7. . You have a 2500-mL sample of 100 M acetic acid Ka 18 10-5. Both c and d give you pH 926 since baseacid 1 and log 1 0. A good buffer is 1 of the pKa so the best buffer is acetic acid with a pka of 476. Formic acid pK a 38 acetic acid pK a 476 or ethylamine pK a 90. Briefly justify your answer. But d is the better answer because the more concentrated solutions make the buffer capacity larger. 20 mM Na2HPO4 10 ACN in water pH 95 Solvent B. There is a wide variety of compositions that can be used to produce a buffer solution An acid buffer is produced from mixing solutions of a weak acid and the conjugate base of the acid. Buffer solutions resist any change in pH. A good buffer is 1 of the p Ka so th...

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