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Cells BIOL131 > Inorganic Chemistry > Flashcards

Inorganic Chemistry Flashcards

Give examples of anions and cations derived from both atoms and molecules Explain the differences between an acid and its conjugate base Understand how the pH scale is derived and how ionisation state and pKa relate to strong and weak acids Outline how buffers work

1
Q

Ions derived from atoms
Give examples of Cations
monovalent
divalent
trivalent
variable

A

Monovalent - Na+, K+
Divalent – Mg2+, Ca2+
Trivalent – Al3+, La3+
Variable – Fe2+ and Fe3+, Cu+, Cu2+

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2
Q

Ions derived from atoms
Give examples of Anions
monovalent

A

Monovalent
Cl-, F-, Br-

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3
Q

An ion derived from molecules
Give example of a Cation
monovalent

A

Cations
Monovalent - NH4+

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4
Q

Ions derived from molecules
Give examples of Anions
monovalent
divalent
trivalent

A

Anions
Monovalent – OH-, NO2-, NO3-, HCO3-
Divalent – CO32-, SO42-
Trivalent – PO43-

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5
Q

Give an example of an ion derived from organic acids

A

CH3COO-

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6
Q

What is Arrhenius Theory of acids and bases

A

Arrhenius Theory of acids and bases
Acids produce hydrogen ions in solution
Bases produce hydroxide ions in solution

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7
Q

What is Bronsted-Lowry Theory of acids and bases

A

Bronsted-Lowry Theory of acids and bases
An acid is a proton (hydrogen ion) donor
A base is a proton (hydrogen ion) acceptor

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8
Q

What is Lewis Theory of acids and bases

A

Lewis Theory of acids and bases
An acid is an electron pair acceptor
A base is an electron pair donor

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9
Q

What is acid strength measured according to and what does this mean?

A

pKa of the acid and the pKa is the pH at which the concentration of acid and conjugate base are equal

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10
Q

What do buffers do?

A

They reduce the possibility of big pH changes when [H+] changes

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Cells BIOL131 (23 decks)

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