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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Marysia29 on October 31, 2020, 06:16:17 AM

Title: Selection of stoichiometric coefficients
Post by: Marysia29 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??

Title: Re: Selection of stoichiometric coefficients
Post by: Borek on October 31, 2020, 08:38:57 AM

Is the charge conserved in your equation?

Title: Re: Selection of stoichiometric coefficients
Post by: Marysia29 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?

Title: Re: Selection of stoichiometric coefficients
Post by: Borek 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.