Acids and bases Flashcards by Molly Flitcroft | Brainscape

Q

Define pH

A

-log[H+]

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Q

Define bronsted-lowry acid

A

Proton donor

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Q

Define bronsted-lowry base

A

Proton acceptor

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Q

Define bronsted-lowry acid-base reaction

A

Reaction involving the transfer of a proton

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Q

Define conjugate base

A

Substance formed when acid has lost proton

eg: HBr —> Br-

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Q

Define monoprotic acid

A

Acid that releases one H+ per molecule

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Q

Define diprotic acid

A

Acid that releases two H+ per molecule

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Q

How do you work out [H+] from pH?

A

10^-pH

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Q

How many decimal places do you give pH to?

A

2

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Q

How do you work out dilution of a strong acid?

A

conc of H+ x old volume / new volume

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Q

Why is the ionic product of water [H+] [OH-]?

4

A

kc of water is [H+] [OH-] / [H2O]

therefore kc [H2O] = [H+} [OH-]

as [H2O] is much bigger than [H+] and [OH-} so [H2O] is effectively a constant number

therefore kc [H2O] = Kw = [H+] [OH-]

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