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

Author Question: You have a 250.-mL sample of 1.04 M acetic acid (Ka = 1.8 105). Calculate the pH of the best buffer. (Read 49 times)

joe

  • Hero Member
  • *****
  • Posts: 627
on: Mar 21, 2021

Question 1

You have 75.0 mL of 0.19 M HA. After adding 30.0 mL of 0.10 M NaOH, the pH is 5.50. What is the Ka value of HA?

◦ 3.2 × 10–6
◦ 8.4 × 10–7
◦ 0.27
◦ 6.7 × 10–7
◦ None of these are correct.

Question 2

You have a 250.-mL sample of 1.04 M acetic acid (Ka = 1.8 × 10–5). Calculate the pH of the best buffer.

◦ 7.00
◦ 4.74
◦ 4.15
◦ 9.26
◦ None of these are correct.
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 joe on Mar 21, 2021

katkat_flores

  • Sr. Member
  • ****
  • Posts: 328
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 55% of students answer this correctly


joe

  • Member
  • Posts: 627
Reply 2 on: Mar 21, 2021
Excellent

frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Hydroxyl amino acid Hydroxyl amino acid
Acid Rain and Power Plant Emissions Acid Rain and Power Plant Emissions
Sample Exercise Prescription for Weight Training: Beginner Sample Exercise Prescription for Weight Training: Beginner
How to calculate simple interest (Part 5; r = I/Pt) How to calculate simple interest (Part 5; r = I/Pt)
Humburger is a good source of niacin , vitamin B6 and pantothenic acid Humburger is a good source of niacin , vitamin B6 and pantothenic acid
Calculate the physical variables Calculate the physical variables
Video: Chemical Buffers - protein buffer, phosphate buffer system and bicarbonate buffer system

For a complete list of videos, visit our video library