Vocabulary Flashcards
Base
An Arrhenius base is a substance that produces hydroxide ions in an aqueous solution
Neutralization
Occurs when an acid and base react in an aqueous solution to form a salt and water
Amphoteric
A substance that can act as both an acid and a base
Monoprotic acid
And acid with one ionizable hydrogen
Ex: HCl
Diprotic Acid
An acid with two ionizable hydrogens
Ex: H2SO4
Triprotic Acid
An acid that has three ionizable hydrogens
Ex: H3PO3
pH
The negative logarithm of the molar concentration of H+ ions
Indicator
A substance that changes color in the presence of an acid or base
3 examples of indicators
Litmus paper
Phenolphthalein
Bromothymol blue
Litmus paper reactions
Neutral - orange
Acid - red
Base - blue
Phenolphthalein reactions
Neutral - clear
Acid - clear
Base - magenta
Bromothymol blue reactions
Neutral - real
Acid - yellow
Base - royal blue
Brønsted-Lowry Acids
Acids are hydrogen ion donors
Brønsted-Lowry Bases
Bases are hydrogen ion acceptors
Lewis Acids
Acids accept a pair of electrons
Lewis Bases
Bases are substances that donate a pair of electrons
Strong Acids
HCl hydrochloric acid
H2SO4 sulfuric acid
HNO3 nitric acid
Strong Bases
NaOH Sodium hydroxide
KOH Potassium hydroxide
Ca(OH)2 Calcium hydroxide
Mg(OH)2 Magnesium hydroxide
Conjugate acid
Particle formed when a weak base gains a hydrogen ion
Conjugate base
Particle formed when a weak acid gains a hydroxide ion
Neutral solution
pH=7
Properties of acids
Sour Change color of indicators React with metals Contain H in formula Proton H+ donors pH
Properties of bases
Bitter Slippery to touch Change color of indicators Emulsify fats and oils Contain OH in formula Proton H+ acceptors pH>7
Acid
An Arrhenius acid is a substance that produces hydrogen ions when dissolved in an aqueous solution
Buffer
A substance that can combine with both acids and bases and are used to keep a constant pH in aqueous solutions