April 19, 2024, 05:43:44 AM
Forum Rules: Read This Before Posting


Topic: Anions  (Read 11210 times)

0 Members and 1 Guest are viewing this topic.

Offline terry33199

  • Regular Member
  • ***
  • Posts: 14
  • Mole Snacks: +0/-3
Anions
« on: February 18, 2008, 01:43:22 AM »
Am I right on these?  Am I missing any?

Of the following anions, Br-, CO32-, Cl-, I-, NO3-, NO2-, PO43-, SO42-, SO32-, list those ions that meet the following criteria:

(1)  Gives a precipitate with Ag+ ion that is insoluble in HNO3.  Br-, Cl-, I-

(2)  Is involved in an oxidation-reduction reaction as part of a confirmation reaction.  Br-, I-

(3)  Gives a precipitate with Ba2+ ion that is soluble in HNO3.  SO42-

(4)  Evolves a gas when acid is needed.  CO32-

(5)  Releases an odorous gas as a product.  NO3-, NO2-

(6)  Does not produce a precipitate in any classification or confirmatory reaction described in this experiment.  SO42-


Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27652
  • Mole Snacks: +1800/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Anions
« Reply #1 on: February 18, 2008, 04:05:56 AM »
Your 6 contradicts your 3. What gas and in what reaction in 5? No idea what reactions you used to identify these anions, but there is at least one more reaction I am sure about just of the top of my head, that fits number 2.
« Last Edit: February 18, 2008, 05:47:54 AM by Borek »
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7979
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Anions
« Reply #2 on: February 18, 2008, 04:20:50 AM »
1. much more
2. more
3.wrong
4. at least one more
5. conditions should be specified (may be much more)
6. wrong answer. Which experiment - do you mean reactions with Ag+ and Ba2+?
AWK

Offline terry33199

  • Regular Member
  • ***
  • Posts: 14
  • Mole Snacks: +0/-3
Re: Anions
« Reply #3 on: February 18, 2008, 05:22:37 PM »
Your 6 contradicts your 3. What gas and in what reaction in 5? No idea what reactions you used to identify these anions, but there is at least one more reaction I am sure about just of the top of my head, that fits number 2.

Equilibrium reactions in aqueous solution

Sponsored Links