Express the pH to two decimal places ANSWER Correct The buffer composed of 012

# Express the ph to two decimal places answer correct

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Express the pH to two decimal places. ANSWER: Correct The buffer composed of 0.12 of propionic acid and 9.0 × 10 2 of its conjugate base, propionate, is made more basic through the addition of a strong base, . Therefore, the values of the weak acid and its conjugate weak base should be adjusted accordingly. The appropriate Henderson-Hasselbalch equation, using the amounts in moles, is Part C What is the of the buffer after the addition of 0.02 of ? Express the pH to two decimal places. ANSWER: Correct The buffer composed of 0.12 of propionic acid and 9.0 × 10 2 of its conjugate base, propionate, is made more acid through the addition of a strong acid, . Therefore, the values of the weak acid and its conjugate weak base should be adjusted accordingly. The appropriate Henderson- Hasselbalch equation, using the amounts in moles, is Problem 17.24 Custom A buffer is prepared by adding 11.0 of ammonium chloride to 230 of 1.00 solution. Part A pH = 4.76 pH mol mol pK a pH pH pH = p + log K a 9.0 × mol 10 2 0.12mol pH mol NaOH = 4.93 pH mol mol NaOH pH = 4.9 + log 9.0 × mol+0.02mol 10 2 0.12mol 0.02mol pH mol HI = 4.59 pH mol mol HI pH = 4.9 + log 9.0 × mol 0.02mol 10 2 0.12mol+0.02mol g (N Cl) H 4 mL MNH 3 pH   #### You've reached the end of your free preview.

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