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Author Question: What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.050 M ... (Read 94 times)

Yolanda

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on: Feb 15, 2020

Question 1

What is the hydronium ion concentration in a solution prepared by mixing 50.00 mL of 0.10 M HCN with 50.00 mL of NaCN? Assume that the volumes of the solutions are additive and that Ka = 4.9 × 10-10 for HCN.
◦ 9.8 × 10-10 M
◦ 7.0 × 10-6 M
◦ 4.9 × 10-10 M
◦ 2.4 × 10-10 M

Question 2

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.050 M CH3CO2Na? Assume that the volume of the solutions are additive and that Ka = 1.8 × 10-5 for CH3CO2H.
◦ 2.87
◦ 4.74
◦ 4.44
◦ 5.05
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by Yolanda on Feb 15, 2020

covalentbond

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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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Yolanda

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Reply 2 on: Feb 15, 2020
Excellent

flexer1n1

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

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