November 23, 2024, 07:11:29 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Na + H2O reaction  (Read 239981 times)

0 Members and 1 Guest are viewing this topic.

Linkiroth

  • Guest
Na + H2O reaction
« on: August 05, 2005, 12:22:10 PM »
What exactly happens, I know that the sodium removes hydrogen... but is the balanced equation:

2Na + H2O ---> H2 + Na2O

or

2Na + 2H2O ---> H2 + 2NaOH

Just a random question I was curious about.
Logged

Offline xiankai

  • Chemist
  • Full Member
  • *
  • Posts: 785
  • Mole Snacks: +77/-37
  • Gender: Male
Re:Na + H2O reaction
« Reply #1 on: August 05, 2005, 12:44:53 PM »
your 2nd reaction is correct.
Logged
one learns best by teaching

Offline sdekivit

  • Chemist
  • Full Member
  • *
  • Posts: 403
  • Mole Snacks: +32/-3
  • Gender: Male
  • B.Sc Biomedical Sciences, Utrecht University
Re:Na + H2O reaction
« Reply #2 on: August 05, 2005, 12:49:24 PM »
metal + water will react according to an redoxreaction:

meta --> metalion + e-

2H2O + 2e-  --> H2 + 2OH(-)
Logged

Linkiroth

  • Guest
Re:Na + H2O reaction
« Reply #3 on: August 05, 2005, 02:17:12 PM »
That's what I thought. But I was told that the first reaction was correct.
Logged

Offline sdekivit

  • Chemist
  • Full Member
  • *
  • Posts: 403
  • Mole Snacks: +32/-3
  • Gender: Male
  • B.Sc Biomedical Sciences, Utrecht University
Re:Na + H2O reaction
« Reply #4 on: August 05, 2005, 03:28:42 PM »
it's correct too but remember that Na2O in H2O will react in an acid-base-reaction due to the O(2-)-ions:

O(2-) + H2O --> 2OH(-)

thus in a solution:

Na2O + H2O --> 2 NaOH

the total nett reaction will then become the same as the first reaction.

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