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Author Question: How many grams of pyridine are there in 100 mL of an aqueous solution that has a pH of 9.00? The Kb ... (Read 391 times)

RYAN BANYAN

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on: Feb 15, 2020

Question 1

Determine the ammonia concentration of an aqueous solution that has a pH of 11.50. The equation for the dissociation of NH3 (Kb = 1.8 × 10-5) is

NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq).


◦ 0.55 M
◦ 2.5 M
◦ 5.7 × 10-3 M
◦ 3.2 × 10-3 M

Question 2

How many grams of pyridine are there in 100 mL of an aqueous solution that has a pH of 9.00? The Kb for pyridine is 1.9 × 10-9 and the equation of interest is

C5H5N(aq) + H2O(l) ⇌ C5H5NH+(aq) + OH-(aq).


◦ 0.79 g
◦ 0.053 g
◦ 0.42 g
◦ 7.9 g
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Marked as best answer by RYAN BANYAN on Feb 15, 2020

ladyjames123

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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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Noor Noorg

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Reply #2 on: Jan 17, 2022
Thank you


collegeotter

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Reply #3 on: Mar 23, 2022
thank you


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