June 16, 2024, 10:10:39 PM
Forum Rules: Read This Before Posting


Topic: 4-nitrophenol characterization  (Read 7973 times)

0 Members and 1 Guest are viewing this topic.

lildimplz

  • Guest
4-nitrophenol characterization
« on: March 10, 2004, 11:35:21 PM »
Why would 4-nitrophenol form a white precipitate in a halogen test using silver nitrate and nitric acid if there is no halogen in its structure?



Edit: edited title for better indexing. Mitch
« Last Edit: April 24, 2004, 06:36:21 PM by Mitch »

Offline Mitch

  • General Chemist
  • Administrator
  • Sr. Member
  • *
  • Posts: 5298
  • Mole Snacks: +376/-3
  • Gender: Male
  • "I bring you peace." -Mr. Burns
    • Chemistry Blog
Re:4-nitrophenol
« Reply #1 on: March 11, 2004, 05:40:57 AM »
I don't think it should. Could you take a melting point of the precipitate to see if it is an Aryl halide. Or even a boiling point of the nitro compound to make sure it is what you think it is?
Most Common Suggestions I Make on the Forums.
1. Start by writing a balanced chemical equation.
2. Don't confuse thermodynamic stability with chemical reactivity.
3. Forum Supports LaTex

Bystander

  • Guest
Re:4-nitrophenol
« Reply #2 on: March 12, 2004, 01:41:30 AM »
You might be knocking it out of solution;  add a little ethanol and see if it dissolves/clarifies.

Offline hmx9123

  • Retired Staff
  • Full Member
  • *
  • Posts: 897
  • Mole Snacks: +59/-18
Re:4-nitrophenol
« Reply #3 on: April 13, 2004, 05:56:59 PM »
Are you sure it's not silver nitrite?  Silver nitrite is used in nitrating aromatic rings in the Victor Meyer reaction.

Offline Donaldson Tan

  • Editor, New Asia Republic
  • Retired Staff
  • Sr. Member
  • *
  • Posts: 3177
  • Mole Snacks: +261/-13
  • Gender: Male
    • New Asia Republic
Re:4-nitrophenol
« Reply #4 on: April 20, 2004, 04:20:45 AM »
perhaps it's insolubility at play?
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

Sponsored Links