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Author Question: What is the [CH3CO2-]/[CH3CO2H] ratio necessary to make a buffer solution with a pH of 4.44? Ka = ... (Read 59 times)

fbq8i

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on: Feb 15, 2020

Question 1

A buffer solution is prepared by dissolving 27.22 g of KH2PO4 and 3.37 g of KOH in enough water to make 0.100 L of solution. What is the pH of the H2PO4-/HPO42- buffer if the Ka2 = 6.2 × 10-8?
◦ 7.00
◦ 7.84
◦ 6.84
◦ 7.21

Question 2

What is the [CH3CO2-]/[CH3CO2H] ratio necessary to make a buffer solution with a pH of 4.44? Ka = 1.8 × 10-5 for CH3CO2H.
◦ 2.0:1
◦ 1.1:1
◦ 0.50:1
◦ 0.94:1
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by fbq8i on Feb 15, 2020

zenzy

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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fbq8i

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Reply 2 on: Feb 15, 2020
Gracias!

cpetit11

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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