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Topic: Net ionic equations with water as a reactant  (Read 20231 times)

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Offline honeybug15

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Net ionic equations with water as a reactant
« on: November 06, 2011, 01:15:32 PM »
Hello,
I am trying to write the net ionic equation between Calcium and water. I think the net ionic equation is...
Ca(s) + H2O(l) => Ca^2+(aq) + 2OH^-(aq) + H2(g)

my question is can I write the net ionic equation this way or should water be written as H+ and OH- ions?

Thank You!
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Offline Borek

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Re: Net ionic equations with water as a reactant
« Reply #1 on: November 06, 2011, 02:42:25 PM »
Looks OK to me. While water does contain H+ and OH- from autoionization, their amount is quite low.
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Offline Mitch

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Re: Net ionic equations with water as a reactant
« Reply #2 on: November 06, 2011, 02:53:34 PM »
Quote from: Borek on November 06, 2011, 02:42:25 PM
...their amount is quite low.

Seven orders of magnitude lower.
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