Chem Chapter 7: Acids and Bases
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Last updated 12:07 AM on 10/17/25
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13 Terms
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acids
a proton donor
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proton
H+, hydrogen without electron
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base
proton acceptor
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strong acid
HCl (hydrochloric acid), 100% ionized
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weak acids
vinegar; 5% allows for the acid to be reversibile
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Hydronium ion
H3O, H+ doesnt exist in H2O so in water we have this ion instead
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pH scale
is a way to express the acidity or basicity of a solution
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pH
is equal to the negative log of H+ or H3O
-log[H+] = -log[H3O]
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p
-log
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if pH = 2.5
-log[H+] = 2.5
-log[H3O] = 10-2.5 = 3×10-3 M
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pH 7
neutral (pure water)
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pH > 7
any pH greater than 7 is a basic
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pH < 7
any pH less than 7 is an acid
Note 
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