18.10 Predicting the Results of an Acid/Base Reaction (Video)

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This project was preformed to supply Libretext authors with videos on General Chemistry topics which can be used to enhance their projects. Also, these videos are meant to act as a learning resource for all General Chemistry students.

Video Topics

This video discusses how to predict the results of an acid/base reaction by comparing Ka’s.

For a given Bronsted acid/base reaction there will an acidic species on either side of the arrow.

The equilibrium will favor the side with the weakest acid.

K_a’s, pK_a’s or structural features can be used to determine the weakest acid.

HF_(aq)+ HS^-_(aq) ⇔ F^-_(aq) + H₂S_(aq)

K_a for HF = 7.2 x 10^-4

K_a for H₂S = 1 x 10^-7

H₂S is the weaker acid therefore the equilibrium will lie to the right.

So {H₂S} > {HS^-} and {F-} > {HF}

Link to Video

Predicting the Results of an Acid/Base Reaction: https://youtu.be/4zI4k6DZ83k

Attribution

Prof. Steven Farmer (Sonoma State University)