18.5 Introduction to pH (Video)
- Page ID
- 342577
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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 defines pH and contains examples of how to calculate pH.
Because of the small concentration of H3O+ we use pH to measure acidity.
pH = -log{H3O+}
Likewise we can say
pOH = -log{-OH}
Because: Kw = {H3O+}{-OH} = 1.0 x 10-14
We can say: pKw = pH + pOH = 14.0
Because at neutrality : {H3O+} = {-OH} = 1.0 x 10-7 M
Neutral pH = 7
pH > 7 Basic or alkaline
pH < 7 Acidic
Link to Video
Introduction to pH: https://youtu.be/pQOa3bb5YEE
Attribution
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Prof. Steven Farmer (Sonoma State University)