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Chemistry — Acids and Bases

pH, reactions, and properties of acids and bases

A
acidbase_acad 15 terms Feb 27, 2026
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Terms 15

1
Acid
Substance that donates H⁺ ions; pH below 7; sour taste
2
Base
Substance that accepts H⁺ ions; pH above 7; bitter and slippery
3
pH Scale
Logarithmic scale from 0–14 measuring acidity; 7 is neutral
4
Neutralization
Acid + base reaction producing water and a salt
5
Strong Acid
Completely dissociates in water; e.g. HCl, H2SO4, HNO3
6
Weak Acid
Partially dissociates in water; e.g. acetic acid (vinegar)
7
Buffer
Solution resisting pH changes; contains weak acid and its conjugate base
8
Arrhenius Definition
Acid produces H⁺ in water; base produces OH⁻ in water
9
Brønsted-Lowry Definition
Acid is proton donor; base is proton acceptor
10
Lewis Definition
Acid accepts electron pair; base donates electron pair
11
Titration
Process of determining concentration using a known solution
12
Equivalence Point
Point in titration where acid and base are in equal molar amounts
13
Indicator
Substance changing color based on pH; e.g. litmus, phenolphthalein
14
Ka (Acid Dissociation Constant)
Measures strength of weak acid; larger Ka = stronger acid
15
Conjugate Pair
Acid and its corresponding base after losing a proton