This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the pH of a buffer that is 0.88 M HCN(aq) and 0.53 M NaCN(aq)? The Ka of HCN is 6.2 10-10. (Read 41 times)

jjjetplane

  • Hero Member
  • *****
  • Posts: 556
on: Jul 8, 2021

Question 1

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 25.00 mL of 12 mol L-1 NH3 in enough water to make 1.000 L of solution? Kb = 1.80 × 10-5 for NH3.
◦ 9.08
◦ 9.26
◦ 9.43
◦ 11.32

Question 2

What is the pH of a buffer that is 0.88 M HCN(aq) and 0.53 M NaCN(aq)? The Ka of HCN is 6.2 × 10-10.
◦ 8.99
◦ 9.21
◦ 9.43
◦ 4.79
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jjjetplane on Jul 8, 2021

tdewitt

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 8, 2021
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.
Answer Preview
Only 39% of students answer this correctly


jjjetplane

  • Member
  • Posts: 556
Reply 2 on: Jul 8, 2021
Great answer, keep it coming :)

xthemafja

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

The titration curve of the buffer acetic acid (CH3COOH) The titration curve of the buffer acetic acid (CH3COOH)
The titration curve of phosphoric acid (H3PO4), a common buffer in biological sy The titration curve of phosphoric acid (H3PO4), a common buffer in biological sy
PAs accumulate in the lumen and buffer the lumen pH during photophosphorylation. PAs accumulate in the lumen and buffer the lumen pH during photophosphorylation.
Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer ... Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer ...
Buffer Lab help+advice? Buffer Lab help+advice?
Buffer Lab help+advice? Buffer Lab help+advice?
Video: Buffers definition and the role of buffer in the body

For a complete list of videos, visit our video library