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

Author Question: How many moles of HCl need to be added to 150.0 mL of 0.50 M NaZ to have a solution with a pH of ... (Read 13 times)

abern

  • Hero Member
  • *****
  • Posts: 533
on: Mar 21, 2021

Question 1

How many millimoles of HCl must be added to 100 mL of a 0.100 M solution of methylamine (pKb= 3.36) to give a buffer having a pH of 10.00?

◦ 8.1
◦ 18.7
◦ 20.0
◦ 41.5
◦ 12.7

Question 2

How many moles of HCl need to be added to 150.0 mL of 0.50 M NaZ to have a solution with a pH of 6.50? (Ka of HZ is 2.3 × 10–5)? Assume negligible volume of the HCl.

◦ 6.8 × 10–3
◦ 7.5 × 10–2
◦ 5.0 × 10–1
◦ 1.0 × 10–3
◦ 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 abern on Mar 21, 2021

yifu223

  • Sr. Member
  • ****
  • Posts: 302
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


abern

  • Member
  • Posts: 533
Reply 2 on: Mar 21, 2021
:D TYSM

zacnyjessica

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

The complete oxidation of 1 mole of glucose generates about 30–32 moles of ATP synthesized from ... The complete oxidation of 1 mole of glucose generates about 30–32 moles of ATP synthesized from ...
Geoengineering is not a solution to climate change Geoengineering is not a solution to climate change
Delta Method Solution Delta Method Solution
with solution with solution
What will be the pH of the solution once equilibrium is established? What will be the pH of the solution once equilibrium is established?
Which of the buffers below would be the BEST choice for making a solution capable of buffering ... Which of the buffers below would be the BEST choice for making a solution capable of buffering ...
Video: Haustral churning, Gastrocolic reflex and mass peristalsis & Defecation

For a complete list of videos, visit our video library