acids and bases ph 7 taste sourtaste bitter react w /basesreact w /acids proton (h 1+ ) donorproton...
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Acids and Bases
pH < 7 pH > 7taste sour taste bitterreact w/bases react w/acidsproton (H1+) donor proton (H1+) acceptorturn litmus red turn litmus bluelots of H1+/H3O
1+ lots of OH1–
react w/metals don’t react w/metals
Both are electrolytes.
Acid vs. Base
Acid
pH > 7
bitter taste
does notreact with
metals
pH < 7
sour taste
react withmetals
Alike Different
Related toH+ (proton)
concentration
pH + pOH = 14
Affects pHand
litmus paper
Base
Different
Topic Topic
Properties
electrolytes
turn litmus red
sour taste
react with metals to form H2 gas
slippery feel
turn litmus blue
bitter taste
ChemASAP
vinegar, milk, soda, apples, citrus fruits
ammonia, lye, antacid, baking soda
electrolytes
Copyright © 2007 Pearson Benjamin Cummings. All rights reserved.
Common Acids and Bases
Strong Acids (strong electrolytes)
HCl hydrochloric acidHNO3 nitric acidHClO4 perchloric acidH2SO4 sulfuric acid
Weak Acids (weak electrolytes)
CH3COOH acetic acidH2CO3 carbonic
Strong Bases (strong electrolytes)
NaOH sodium hydroxideKOH potassium hydroxideCa(OH)2 calcium hydroxide
Weak Base (weak electrolyte)
NH3 ammonia
Kotz, Purcell, Chemistry & Chemical Reactivity 1991, page 145
Weak Base (weak electrolyte)
NH4OH ammonia
NH3 + H2O NH4OH
Acid + Base SaltSalt + Water
• Orange juice + milk bad taste• Evergreen shrub + concrete dead bush• Under a pine tree + fertilizer white powder
HCl + NaOH NaCl + HOH salt water
Acid-Base Neutralization
1+ 1-
+ +
Hydronium ion Hydroxide ion
H3O+ OH-
Water
H2O
Water
H2O
Water
H2O
Water
H2O
Dorin, Demmin, Gabel, Chemistry The Study of Matter 3rd Edition, page 584
Acid-Base Neutralization
1+ 1-
+ +
Hydronium ion Hydroxide ion Water
H3O+ OH- H2O
Water
H2O
Dorin, Demmin, Gabel, Chemistry The Study of Matter 3rd Edition, page 584
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