Writing equations for weak acids/bases

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Samantha Man 1L
Posts: 63
Joined: Fri Sep 28, 2018 12:22 am

Writing equations for weak acids/bases

Postby Samantha Man 1L » Wed Jan 23, 2019 9:33 pm

Is it acceptable to write the short-handed versions of weak acid and weak base equations where HA-->(H+)+(A-) and B+H2O-->(HB+)+(OH-), respectively, or should we always write out the full equation and include all spectator ions?

Sam Joslyn 1G
Posts: 34
Joined: Fri Sep 28, 2018 12:20 am

Re: Writing equations for weak acids/bases

Postby Sam Joslyn 1G » Wed Jan 23, 2019 9:37 pm

I don't think we need to include spectator ions. I believe that the format in which you wrote them would be totally acceptable as long as you get he message across and it's clear what you're talking about!

Angela Grant 1D
Posts: 67
Joined: Fri Sep 28, 2018 12:25 am

Re: Writing equations for weak acids/bases

Postby Angela Grant 1D » Wed Jan 23, 2019 9:38 pm

We can disregard spectator ions when writing out equations with salts, but I think you should write out the entire equation for other scenarios to make sure you're noting the correct Kb / Ka values that correspond

paytonm1H
Posts: 74
Joined: Fri Sep 28, 2018 12:18 am

Re: Writing equations for weak acids/bases

Postby paytonm1H » Wed Jan 23, 2019 9:40 pm

I would also caution to make sure your stoichiometric coefficients are correct when writing shorthand version of weak reactions.


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