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CH 223 > Acid-Base Properties of Salt Solutions > Flashcards

Acid-Base Properties of Salt Solutions Flashcards

1
Q

What is the Ka of H3O+?

A

1

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2
Q

What is the Kb of OH-?

A

1

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3
Q

If an acid or base is weaker than water, how do we describe its acid/base character?

A

Little/no acid/base character

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4
Q

If a salt is made from the anion of a strong acid and the cation of a strong base, will its solution be acidic, basic, or neutral?

A

Neutral

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5
Q

If a salt is made from the cation of a weak base and the anion of a strong acid, will its solution be acidic, basic, or neutral?

A

Acidic

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6
Q

If a salt is made from a small, charged metal cation and the anion of a strong acid, will its solution be acidic, basic, or neutral?

A

Acidic

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7
Q

If a salt is made from the cation of a strong base and the anion of a weak acid, will its solution be acidic, basic, or neutral?

A

Basic

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8
Q

Is NaCl solution acidic, basic, or neutral?

A

Neutral
Na+ and Cl- are the ions of strong acids/bases

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9
Q

Is NH4Cl solution acidic, basic, or neutral?

A

Acidic
NH4+ = acid, cation of weak base NH3
Cl- = anion of strong acid HCl, spectator

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10
Q

Is KNO2 solution acidic, basic, or neutral?

A

Basic
K+ = cation of strong base KOH, spectator
NO2- = base, anion of weak acid HNO2

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11
Q

Is CrBr3 solution acidic, basic, or neutral?

A

Acidic
Cr^3+ = acid, small charged metal cation
Br- = anion of strong acid HBr, spectator

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12
Q

Is Ba(NO3)2 solution acidic, basic, or neutral?

A

Neutral
Ba^2+ = cation of strong base Ba(OH)2
NO3- = anion of strong base HNO3

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13
Q

Is NaClO solution acidic, basic, or neutral?

A

Basic
Na+ = cation of strong base NaOH, spectator
ClO- = base, anion of weak acid HClO

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14
Q

Is Na2CO3 solution acidic, basic, or neutral?

A

Basic
Na+ = cation of strong base NaOH, spectator
CO3^2- = base, anion of weak acid HCO3-

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15
Q

Is CH3NH3Br solution acidic, basic, or neutral?

A

Acidic
CH3NH3+ = acid, cation of weak base CH3NH2
Br- = anion of strong acid HBr, spectator

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16
Q

If a salt is made of a cation that is a weak acid and an anion that is a weak base, what does the aciditiy of the solution depend on?

A

The Ka and Kb of the ions
If Ka > Kb, then acidic
If Kb > Ka, then basic

CH 223 (15 decks)

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