Acids and Bases Flashcards

1
Q

Arrhenious acid

A

A substance that dissociates in water to produce H+ ions

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2
Q

Arrhenious base

A

A substance that dissociates in water to produce OH- ions

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3
Q

Bronsted Lowry acid

A

A proton donator

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4
Q

Bronsted Lowry base

A

A proton acceptor

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5
Q

Neutralisation

A

A reaction between an acid and a base forming a salt and water

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6
Q

Conjugate acid

A

formed when a base accepts a proton

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7
Q

Conjugate base

A

formed when an acid donates a proton

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8
Q

Conjugate pair

A

An acid and a base that differ by a proton

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9
Q

Primary standard

A

A substance of high Relative Molecular Mass which can be obtained in a pure stable soluble solid form
so that it can be weighed out
and dissolved in water to give a solution of known concentration

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10
Q

Titration

A

A laboratory procedure

where a measured volume of one solution is added to a known volume of another solution until the reaction is complete

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11
Q

pH

A

-log[H+]

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12
Q

Kw

A

[H+].[OH-]

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13
Q

Strong acid

A

Good proton donor or is fully dissociated into ions in a dilute aqueous solution

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14
Q

Weak acid

A

Poor proton donor or slightly dissociated into ions in a dil. aq. soln.

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15
Q

Strong base

A

A good proton acceptor or one which fully dissociated into ions in a dil. aq. soln.

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16
Q

Weak base

A

A poor proton acceptor or one which is slightly dissociated in a dil. aq. soln.

17
Q

Indicator

A

A substance that changes colour according to the pH of the solution it’s in

18
Q

Methyl Orange: in acid; in base; range; when?

A

Acid: red
Base: yellow
Range: pH 3-5
Useful: strong acid involved

19
Q

Phenolphthalein: in acid; in base; range; when?

A

Acid: colourless
Base: pink
Range: pH 8-11
Useful: strong base involved

20
Q

Litmus: in acid; in base; range; when?

A

Acid: red
Base: blue
Range: 5-8
Useful: only when both strong acids and bases are involved. Not as reliable as others for accuracy

21
Q

Solution

A

A completely perfect mixture of a solute and a solvent, where the particles are hommogenous

22
Q

Concentration

A

The amount of solute that is dissolved in a given volume of solution

23
Q

Molarity

A

The number of moles of solute per litre of solution

24
Q

Monobasic acid

A

An acid which donates one proton per molecule

25
Q

Dibasic acid

A

Donates two protons per molecule

26
Q

Tribasic acid

A

Donates three protons per molecule