April 19, 2024, 07:25:52 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: formula of an insoluble salt  (Read 7358 times)

0 Members and 1 Guest are viewing this topic.

Offline firedamage

  • Regular Member
  • ***
  • Posts: 67
  • Mole Snacks: +0/-7
formula of an insoluble salt
« on: February 21, 2009, 12:55:25 AM »
in what condition Cu2+(aq) + 2I-(aq) =CuI2(s)??
and in what condition 2Cu2+(aq) +4I-(aq)=2CuI(s)+I2(s)?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27652
  • Mole Snacks: +1800/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: formula of an insoluble salt
« Reply #1 on: February 21, 2009, 05:27:20 AM »
You may have to consult Nernst equation to check at what concentrations iodide is able to reduce copper (taking CuI precipitation into account).
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline firedamage

  • Regular Member
  • ***
  • Posts: 67
  • Mole Snacks: +0/-7
Re: formula of an insoluble salt
« Reply #2 on: February 21, 2009, 09:01:10 PM »
is it Cu2+(aq) + 2I-(aq) =CuI2(s) is not stable so it decompose into
2Cu2+(aq) +4I-(aq)=2CuI(s)+I2(s)?
Logged

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7979
  • Mole Snacks: +555/-93
  • Gender: Male
Re: formula of an insoluble salt
« Reply #3 on: February 23, 2009, 01:26:11 AM »
Quote from: firedamage on February 21, 2009, 09:01:10 PM
is it Cu2+(aq) + 2I-(aq) =CuI2(s) is not stable so it decompose into
2Cu2+(aq) +4I-(aq)=2CuI(s)+I2(s)?
This reaction proceeds immediately in water solution at room temperature
Logged
AWK
Pages: [1]   Go Up
« previous next »
Sponsored Links