November 27, 2024, 12:48:12 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: detect N2 produced in reactions of metals and HNO3  (Read 5120 times)

0 Members and 1 Guest are viewing this topic.

Offline tortoise

  • Regular Member
  • ***
  • Posts: 72
  • Mole Snacks: +4/-10
  • Gender: Male
  • I'm a tortoise!
detect N2 produced in reactions of metals and HNO3
« on: December 30, 2010, 09:23:19 AM »
Hi!

Somebody please tell me some methods to recognize it if N2 is produced in reactions of metals and HNO3.

Thank you in advance!
Logged

Offline Wald_ron

  • Regular Member
  • ***
  • Posts: 98
  • Mole Snacks: +10/-2
Re: detect N2 produced in reactions of metals and HNO3
« Reply #1 on: January 01, 2011, 06:11:42 PM »
N2 is a gas, so if you get a gas, then you may have N2
Logged
I've never seen a mole in a bag of animal crackers , but I've heard they're tasty. Can I have one please :)

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27862
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: detect N2 produced in reactions of metals and HNO3
« Reply #2 on: January 01, 2011, 07:04:41 PM »
No. If there is a gas between products, it is most likely one of the nitrogen oxides.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline rackye

  • Regular Member
  • ***
  • Posts: 24
  • Mole Snacks: +1/-0
  • Gender: Male
Re: detect N2 produced in reactions of metals and HNO3
« Reply #3 on: January 01, 2011, 07:16:43 PM »
true but some of the metals when reacts with HNO3 produces Hidrogen as a gas
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27862
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: detect N2 produced in reactions of metals and HNO3
« Reply #4 on: January 02, 2011, 06:19:13 AM »
This is tricky. You have highly reactive hydrogen (strong reducing agent) and nitric acid (strong oxidizing agent). They react immediately, so hydrogen doesn't survive long enough to leave the solution in substantial amounts.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline jcjlf

  • Regular Member
  • ***
  • Posts: 21
  • Mole Snacks: +0/-3
  • Gender: Male
Re: detect N2 produced in reactions of metals and HNO3
« Reply #5 on: January 06, 2011, 02:36:23 PM »
Quote from: tortoise on December 30, 2010, 09:23:19 AM
Hi!

Somebody please tell me some methods to recognize it if N2 is produced in reactions of metals and HNO3.

Thank you in advance!

Some rough ideas, never tried:
Catch the evolving gases in a gas syringe, let enter  enough O2 to oxidize NO to NO2, dissolve the brown NO2 in distilled water, if there is N2 present it will remain for the most undissolved.
Or measure the density of the gaseous mixture with a gas syringe and compare it to table values?
Gas chromatography?

Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links