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Author Question: Assuming equal concentrations of conjugate base and acid, which one of the following mixtures is ... (Read 40 times)

Tb12162018

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on: Nov 5, 2023

Question 1

Assuming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer solution with an optimum pH of 9.2–9.3?
◦ CH3COONa / CH3COOH  (Ka = 1.8 × 10–5)
◦ NH3 / NH4Cl (Ka = 5.6 × 10–10)
◦ NaOCl / HOCl (Ka = 3.2 × 10–8)
◦ NaNO2 / HNO2 (Ka = 4.5 × 10–4)
◦ NaCl / HCl

Question 2

Assuming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer solution with an optimum pH of 4.6–4.8?
◦ CH3COO2Na / CH3COOH (Ka = 1.8 × 10–5)
◦ NH3 / NH4Cl (Ka = 5.6 × 10–10)
◦ NaOCl / HOCl (Ka = 3.2 × 10–8)
◦ NaNO2 / HNO2 (Ka = 4.5 × 10–4)
◦ NaCl / HCl
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
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Marked as best answer by Tb12162018 on Nov 5, 2023

hvhf4k+549qz8f218jyo@shar

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Reply #1 on: Nov 5, 2023
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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Tb12162018

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Reply 2 on: Nov 5, 2023
YES! Correct, THANKS for helping me on my review

brbarasa

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Reply 3 on: Yesterday
Gracias!

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