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

Author Question: What is the [CH3CO2-]/[CH3CO2H] ratio necessary to make a buffer solution with a pH of 4.44? Ka = ... (Read 101 times)

fbq8i

  • Hero Member
  • *****
  • Posts: 527
on: Feb 15, 2020

Question 1

A buffer solution is prepared by dissolving 27.22 g of KH2PO4 and 3.37 g of KOH in enough water to make 0.100 L of solution. What is the pH of the H2PO4-/HPO42- buffer if the Ka2 = 6.2 × 10-8?
◦ 7.00
◦ 7.84
◦ 6.84
◦ 7.21

Question 2

What is the [CH3CO2-]/[CH3CO2H] ratio necessary to make a buffer solution with a pH of 4.44? Ka = 1.8 × 10-5 for CH3CO2H.
◦ 2.0:1
◦ 1.1:1
◦ 0.50:1
◦ 0.94:1
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by fbq8i on Feb 15, 2020

zenzy

  • Sr. Member
  • ****
  • Posts: 336
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.
Answer Preview
Only 39% of students answer this correctly


fbq8i

  • Member
  • Posts: 527
Reply 2 on: Feb 15, 2020
Great answer, keep it coming :)

hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

The Canadian ballot is considerably simpler than the American ballot. Note there is nothing like a c The Canadian ballot is considerably simpler than the American ballot. Note there is nothing like a c
A medical assistant should present a neat appearance and make it a habit to wear a smile. A medical assistant should present a neat appearance and make it a habit to wear a smile.
With solution With solution
What is the concentration of HNO3 in the final solution when 70.0 mL of a 6.00 M HNO3 solution ... What is the concentration of HNO3 in the final solution when 70.0 mL of a 6.00 M HNO3 solution ...
A 0.51 m aqueous solution of an unknown solute has a boiling point elevation of 0.62°C. The ... A 0.51 m aqueous solution of an unknown solute has a boiling point elevation of 0.62°C. The ...
Solution to linear and parabola Solution to linear and parabola
Video: Condensation and Hydrolysis Animation

For a complete list of videos, visit our video library