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

Author Question: The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 C is 2.03. What is the value ... (Read 72 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Aug 27, 2018
The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 C is 2.03. What is the value of Ka for HF?
 
  A) 2.0  10-9
  B) 1.1  10-9
  C) 6.0  10-5
  D) 3.5  10-4
  E) none of the above

Question 2

What is the electron configuration for the Co2+ ion?
 
  A) Ar4s13d6
  B) Ar3d7
  C) Ar3d5
  D) Ar4s23d9
  E) Ne3s23p10

Question 3

The balanced half-reaction in which dichromate ion is reduced to chromium metal is a ________ process.
 
  A) two-electron
  B) six-electron
  C) three-electron
  D) four-electron
  E) twelve-electron
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

shoemake

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Aug 27, 2018
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 29% of students answer this correctly


Hungry!

  • Member
  • Posts: 1,071
Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Citric Acid Cycle Citric Acid Cycle
The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ... The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ...
Integral Solution Integral Solution
lab solution lab solution
To make a 3.00 m solution, one could take 3.00 moles of solute and add To make a 3.00 m solution, one could take 3.00 moles of solute and add
Sprinting, running and lactic acid fermenation Sprinting, running and lactic acid fermenation
Video: Glomerubular filtrate rate -pressures that affect GFR and net filtration pressure

For a complete list of videos, visit our video library