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Chemistry A-Level > Module 2: Acids and Redox > Flashcards

Module 2: Acids and Redox Flashcards

1
Q

What is another name for a hydrogen ion?

A

Proton

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2
Q

What are acids classified as?

A

Proton donors

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3
Q

Why are most acids only acidic once in solution?

A

Because the ions are free to move

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4
Q

What is the formula for hydrochloric acid?

A

HCl

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5
Q

What is the formula for sulphuric acid?

A

H₂SO₄

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6
Q

What is the formula for nitric acid?

A

HNO₃

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7
Q

What is the formula for phosphoric acid?

A

H₃PO₄

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8
Q

What is the formula for ethanoic acid?

A

CH₃COOH

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9
Q

What is the pH of a high hydrogen ion concentration?

A

Low pH

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10
Q

What is the pH of a low hydrogen ion concentration?

A

High pH

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11
Q

What is a strong acid?

A

A strong acid is an acid that has fully dissociated hydrogen ions

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12
Q

What is a weak acid?

A

A weak acid is an acid that has only partially dissociated hydrogen ions

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13
Q

What is the formula of the base sodium hydroxide?

A

NaOH

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14
Q

What is the formula of the base potassium hydroxide?

A

KOH

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15
Q

What is the formula of the base ammonia?

A

NH₃

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16
Q

What is the definition for a base?

A

A proton acceptor

17
Q

What is the definition of a salt?

A

An acid where one or more of its hydrogen ions is replaced with a metal ion or an ammonium ion

18
Q

What is oxidation?

A

Loss of electrons (OILRIG)

19
Q

What is reduction?

A

Gain of electrons (OILRIG)

20
Q

What is the oxidation number?

A

A number to tell how many electrons have been lost or gained

21
Q

What is a disproportionation reaction?

A

A redox reaction in which an element is both oxidised and reduced

22
Q

What does the roman numerals refer to?

A

Oxidation state

Chemistry A-Level (8 decks)

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