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Topic: Selection of stoichiometric coefficients  (Read 148 times)

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Offline Marysia29

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Selection of stoichiometric coefficients
« on: October 31, 2020, 06:16:17 AM »
Hello
I need help with stoichiometric coefficients.
I attached a task with a reaction.

When I did this task myself, I completed the stoichiometric coefficients differently:
Ga + H3O+ + 5H20 --> [Ga(H20)6]3+ + 1/2 H2. I can also multiply everything by two to remove the fraction on the hydrogen.

Is my solution also correct??

Offline Borek

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Re: Selection of stoichiometric coefficients
« Reply #1 on: October 31, 2020, 08:38:57 AM »
Is the charge conserved in your equation?
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Offline Marysia29

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Re: Selection of stoichiometric coefficients
« Reply #2 on: October 31, 2020, 08:58:42 AM »
I think I understand now.

In my equation on the left side I have 1+ and on the right side I have 3+. So, I have to use 3H3O+ and the charge will be conserved in equation, am I right?

Offline Borek

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Re: Selection of stoichiometric coefficients
« Reply #3 on: October 31, 2020, 03:53:08 PM »
Yes, in the balanced reaction equation charge must be conserved just like mass (atoms) is. Mass (atoms) can't appear from nowhere, charge can't as well. There is a slight difference as there are no negative atoms, while charge can be both negative and positive, but what matters is that total charge doesn't change.
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