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Chemisty (g) Module 2 > 2.1.4 > Flashcards

2.1.4 Flashcards

1
Q

Hydrochloric acid

A

HCL

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2
Q

Sulphuric acid

A

H2SO4

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3
Q

Nitric acid

A

HNO3

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4
Q

Ethanoic acid

A

C2H4O2
CH3COOH

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5
Q

Sodium hydroxide

A

NaOH

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6
Q

Potassium hydroxide

A

KOH

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7
Q

Ammonia

A

NH3

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8
Q

Solute

A

Substance that is dissolved

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9
Q

Solvent

A

Liquid substance is dissolved in

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10
Q

Convention from cm3 to dm3

A

/1000

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11
Q

Units of concentration

A

gdm-3
Moldm-3

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12
Q

n=

A

C x V

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13
Q

What is a standard solution

A

A solution of a known concentration

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14
Q

What do you need to make a standard solution

A

A known mass of substance dissolved in a known volume

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15
Q

What technique do you use to get the known mass

A

Weighing by difference
Take weight of scoop after transfer away from weight of substance and scoop

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16
Q

How do you get a known volume

A

Use a volumetric flask

17
Q

Definition of an acid

A

Compound that dissolves in water to form a solution that contains hydrogen ions and has a ph less than 7

18
Q

Definition of an alkali

A

A compound that dissolved in water to form a solution that contains hydroxide ions amd has a ph more than 7

19
Q

What is a concentrated or dilute acid

A

The measure of moles in the given volume

20
Q

What is a strong or weak acid

A

The measure of degree of dissociation

21
Q

Strong acid definition

A

Fully dissociates into ions in water

22
Q

Weak acids definition

A

Only partially dissociates into ions in water

23
Q

Examples of strong acids

A

Hydrochloric acid
Sulfiric acid
Nitric acid

24
Q

Example of weak acids

A

Carbonic acid ( H2CO3)
Methanoic acid ( HCOOH)
Ethanoic acid ( CH3COOH)

25
Q

If a strong and weak acid has the same concentration what would be the differences

A

The strong acid would have a lower ph and a faster rate of reaction

26
Q

Define base

A

Any metal oxide or metal hydroxide
OR
A substance that accepts protons

Most bases are insoluble those that are soluble are alkalis

27
Q

Define salt

A

Compound formed when hydrogen ions in an acid are replaced by metal ions or ammonium ions

28
Q

Acid + metal

A

Salt + hydrogen

29
Q

Acid + metal oxide

A

Salt+ water

30
Q

Acid + metal hydroxide

A

Salt + water

31
Q

Acid + metal carbonate

A

Salt + carbon dioxide + water

32
Q

Acid + metal hydrogencarbonate

A

Salt+ co2 + water

33
Q

Acid + ammonia

A

Ammonium salt

Chemisty (g) Module 2 (3 decks)

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