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 43 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

Dinolord

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Citric Acid Cycle (Kreb's Cycle) Citric Acid Cycle (Kreb's Cycle)
Sample Teaching Plan for Hypertension Sample Teaching Plan for Hypertension
Sample Student Externship Form Sample Student Externship Form
Linolenic Acid Conversion to EPA and DHA. Linolenic Acid Conversion to EPA and DHA.
What is the estimated age of the archaeological sample What is the estimated age of the archaeological sample
A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ... A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ...
Video: Helper T cell receptors, activation, proliferation, differentiation & action

For a complete list of videos, visit our video library