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Author Question: Starting with 0.250L of a buffer solution containing 0.250 M benzoic acid (C6H5COOH) and 0.20 M ... (Read 70 times)

dabomba718

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on: Nov 5, 2023

Question 1

Methyl red is a common acid-base indicator.  It has a Ka equal to 6.3 × 10–6.  Its un-ionized form is red and its anionic form is yellow.  What color would a methyl red solution have at pH = 7.8?
◦ green
◦ red
◦ blue
◦ yellow
◦ violet

Question 2

Starting with 0.250L of a buffer solution containing 0.250 M benzoic acid (C6H5COOH) and 0.20 M sodium benzoate (C6H5COONa), what will the pH of the solution be after the addition of 25.0 mL of 0.100M HCl? (Ka (C6H5COOH) = 6.5 x 10-5)
◦ 4.19
◦ 4.10
◦ 4.28
◦ 4.05
◦ 3.78
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
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Marked as best answer by dabomba718 on Nov 5, 2023

rika06@comcast.net

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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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dabomba718

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Reply 2 on: Nov 5, 2023
:D TYSM

jackie

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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