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

Author Question: Consider a solution consisting of the following two buffer systems: H2CO3HCO3 + H+ pKa = 6.4 ... (Read 35 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
on: Mar 21, 2021

Question 1

Calculate the pH of a solution that is 2.00 M HF, 1.00 M NaOH, and 0.699 M NaF. (Ka = 7.2 10–4)

◦ 3.14
◦ 3.37
◦ 2.69
◦ 2.91
◦ None of these are correct.

Question 2

Consider a solution consisting of the following two buffer systems:
              H2CO3HCO3– + H+     pKa = 6.4
              H2PO4–HPO42– + H+     pKa = 7.2
At pH 6.4, which one of the following is true of the relative amounts of acid and conjugate base present?

◦ [H2CO3] > [HCO3–] and [H2PO4–] > [HPO42–]
◦ [H2CO3] = [HCO3–] and [H2PO4–] > [HPO42–]
◦ [H2CO3] = [HCO3–] and [HPO42–] > [H2PO4–]
◦ [HCO3–] > [H2CO3] and [HPO42–] > [H2PO4–]
◦ [H2CO3] > [HCO3–] and [HPO42–] > [H2PO4–]
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by awywial on Mar 21, 2021

succesfull

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Mar 21, 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 35% of students answer this correctly


awywial

  • Member
  • Posts: 577
Reply 2 on: Mar 21, 2021
YES! Correct, THANKS for helping me on my review

anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Common hydrogen bonds in biological systems Common hydrogen bonds in biological systems
Benedict's Solution Benedict's Solution
The effects of alcoholism on the body systems. The effects of alcoholism on the body systems.
A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water. A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water.
River Systems River Systems
With solution With solution
Video: Introduction to filtration - filtrate formation and composition

For a complete list of videos, visit our video library