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Chemistry - Module 2 > M2 - Chapter 4 > Flashcards

M2 - Chapter 4 Flashcards

1
Q

All acids contain what in their formula

A

Hydrogen

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2
Q

When dissolved in what, what do acids do

A

Dissociate = release hydrogen ions as protons

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3
Q

What is an alkali

A

A soluble base

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4
Q

What is a strong acid

A

fully dissociate in solution

H+ releases

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5
Q

What is strong bases

A

fully dissociate in solution

OH- released

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6
Q

What are weak acids

A

only partially dissociate in solution, only a small percentage of the products will be ions

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7
Q

What occurs at equilibrium

A

the products are formed at the same rate as the reactants are used
• This means that at equilibrium, both reactants and products are present in the solution

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8
Q

What does the equilibrium sign indicate

A

That the forward reaction is incomplete

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9
Q

Acids + bases table

A
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10
Q

Neutralisation reaction

A
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11
Q

Neutralisation ionic equation

A
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12
Q

What do spectator ions form in a neutralisation reaction

A

The salt

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13
Q

Is sulphuric acid a strong acid

A

Yes…kinda

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14
Q

How is sulfuric acid kinda a strong acid

A
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15
Q

In sulphuric acid what behaves as a weak acid and what behaves as a strong acid

A

Sulphuric acid = strong

HS04- ions = weak acid

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16
Q

What is a standard solution

A

a solution of a known concentration

17
Q

How to make a standard solution

A
18
Q

Define concentration

A

• The concentration of a solution is the amount of solute dissolved in a solvent to make 1 dm3 of solution

19
Q

How to carry out a titration

A
20
Q

What is concordant

A

within 0.1 of each other

21
Q

Percentage uncertainty formula

A
22
Q

Percentage uncertainty - burette

A

Double the uncertainty = measured twice

23
Q

Redox rules

A

• In simple ions, the oxidation number is the same as the charge on the ion
• For atoms in elements the oxidation number is 0
• In compounds, the total of all the oxidation numbers is 0
• In polyatomic ions, the total of all the oxidation numbers is equal to the charge on the ion
• In either a compound or an ion, the more electronegative element is given the oxidation state

24
Q
A
25
Q
A
26
Q
A
27
Q
A
28
Q
A
29
Q
A
30
Q
A
31
Q
A
32
Q

The oxidation state of H in metal hydrides is always…

A

-1

33
Q

The oxidation state of O in peroxides is always…

A

-1

(H2O2)

34
Q

The oxidation state of O bonded to F is always…

A

+2

35
Q

When working out oxidation states always take into account

A

SUBSCRIPTS

36
Q

Summary redox rules

A

Chemistry - Module 2 (6 decks)

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