Acids and Bases 34 Flashcards

Terms Definitions
pOH
-log[OH-]
CH3COOH
acetic
red->blue
base
H2SO4
acid
H₃PO₄
phosphoric acid
Potassium Hydroxide
KOH
litmus acid
red
Acetic Acid
CH3COOH
Nitric Acid
HNO3
KOH
potassium hydroxide (strong)
Hydrobromic Acid
HBr (strong)
CH₃NH₂
methylamine (weak base)
alkaline solution
a basic solution
Bases
are soapy or slippery
means to form new ions
ionization
H3BO3
boric acid; eyewash and pesticide
neutral
solution that contains equal concentrations of hydronium ions and hydroxide ions
corrosive
meaning eating away at other materials
base
a compound that produces hydroxide ions in solution (hydrogen ion acceptor)
Hydroxide ions (OH-)
in water bases form?
conjugate base
speicies that remains after Bronsted-Lowry acid has given up a H+ proton
bronsted-Lowry base
susbtance that accepts a proton
Ions
Created by a reaction with water molecules
Strong Base
a base that completely dissociates into metal ions and hydroxide ions in aqueous solution; highly soluble; has very high pH
Calcium Hydroxide
Base: Ca(OH) 2
Used for reducing acidity in soil
the smaller the Ka?
the weaker the acid
indicator
a compound that can reversibly change colors depending on pH of the solution.
acid properties
substance that tastes sour, reacts with metals and carbonates, and turns blue litmus paper red.
strong electrolytes
strong acids and bases; compounds that dissociate close to 100%; most water soluble compounds in metal group 1 and 2
Arrhenius Base
a substance which, when placed in water, dissociates to form a hydroxide ion (OH⁻(aq)) and a cation
Acids produce _____ when dissolved in _____
H+; water
What is an Alkali? (Reference to protons)
Proton Donors
hydroxide ion
negatively charged ion made of oxygen and hydrogen (OH-)
molecule
a group of atoms held by covalent bonds
salt
an ionic compound composed of a cation from a base and an anion from an acid
mechanical digestion
is a physical process in which large pieces of food are torn and ground into smaller pieces
Triprotic Acid
An acid able to donate three protons per molecule.
equivalence point
the point at which the two solutions used in a titration are present in chemically equivalent amounts
bitter
If you could taste a base, it would taste __________.
End Point
the point in the titration where the indicator changes color
If a starch is present, what color does the iodine turn?
Purple or black
What happens when Acid and Metal react?
Metal Salt and Hydrogen
equivalence point (n)
point at which moles of H+ ions from the acid equal moles of OH- ion from base
What is the relationship of pKa and pKb in a conjugate pair?
pKa(acid)+pKa(CONJ base) = 14
In diprotic acids:
Also, pKa1+pKb2=14 and pKa2+pKb1=14 and pKa1 is always less than pKa2 because the first proton is always more acidic.
Does the pH of the buffer change if you change the concentration of the conjugate acid/base/weak acid or base, but maintain the same ration?
no, but the buffering capacity increases
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Term:
Definition:
Definition:

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