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Topic: Reaction result?  (Read 2472 times)

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Offline bogdanch

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Reaction result?
« on: June 11, 2014, 09:34:41 AM »
Hello In my 12 grade Chemistry Manual i have the following reaction as an exercise:

NaOH + H+ = ?

H+ (possitive ion)

Is this reaction even posibble? If yes, what is the result?

Thank you!

Offline Borek

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Re: Reaction result?
« Reply #1 on: June 11, 2014, 09:35:56 AM »
What is NaOH?
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Offline bogdanch

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Re: Reaction result?
« Reply #2 on: June 11, 2014, 09:45:12 AM »
NaOH = Sodium hydroxide

It can awlsow be writen as

Na{+} + OH{-}

Where {+} / {-} is the ionic charge.

Offline Arkcon

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Re: Reaction result?
« Reply #3 on: June 11, 2014, 12:33:04 PM »
Good.  So you understand we sometimes describe ionic compounds in water as separate ions.  Good.  Now are you still wondering about the identity of H+?  Can you describe some other ions?
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline bogdanch

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Re: Reaction result?
« Reply #4 on: June 11, 2014, 01:51:29 PM »
Yes, I understand.

So: Na+ + OH- + H+ :rarrow: Na+ + H2O ?

The problem apeared in a acid-base couple excersize:

HCl ::equil:: Cl- + H+
NaOH + H+ ::equil:: Na+ + H2O
____________________________
HCl + NaOH  :rarrow: Cl- + Na+ + H2O ; Is this correct? and is this a one way reaction (:rarrow:) or is this a both way reaction  (::equil::)?

The final reaction should be:

HCl + NaOH :rarrow: NaCl + H2O

I don't think this reaction could result back to HCl + NaOH? Is it possible?
« Last Edit: June 11, 2014, 02:01:54 PM by bogdanch »

Offline Borek

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Re: Reaction result?
« Reply #5 on: June 11, 2014, 03:50:52 PM »
Most things you wrote are correct, however, it is never a good idea to mix dissociated and non-dissociated substances on the ionic equations (unless there are serious reasons to do so).

Both HCl and NaOH are strong and you can safely assume they are dissociated 100%. That means they should be written as H++Cl- and Na++OH- from the very beginning.

As they are strong reverse reaction doesn't take place.
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