Acids, Bases And Salts Flashcards

1
Q

Acids in solution release…

A

H+ ions

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2
Q

pH measures …

A

How acidic or alkaline a solution is

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3
Q

Alkalis in solution release…

A

OH-

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4
Q

You measure the pH of a solution using an…

A

indicator

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5
Q

As the concentration of ions increases…

A

the pH decreases

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6
Q

Litmus: colour in acid…

A

red

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7
Q

Litmus: colour in neutral solution…

A

purple

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8
Q

Litmus: colour in base…

A

Blue

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9
Q

Methyl orange colour in acid…

A

red

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10
Q

Methyl orange colour in neutral solution…

A

yellow

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11
Q

Methyl orange colour in base…

A

yellow

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12
Q

Phenolphthalein colour in acid…

A

colourless

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13
Q

Phenolphthalein colour in neutral solution…

A

colourless

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14
Q

Phenolphthalein colour in base…

A

pink

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15
Q

a base is…

A

any substance that reacts with an acid to form a salt and water only

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16
Q

alkalis are…

A

soluble bases

17
Q

a weak acid is…

A

an acid that is partially dissociated into its ions in an aqueous solution or water

18
Q

a strong acid is…

A

an acid that is completely dissociated or ionized in an aqueous solutoon

19
Q

the concentration of an acid measures…

A

how much acid there is in a litre(1dm3) of water

20
Q

as hydrogen ion concentration in a solution increases by a factor of 10….

A

, the pH of the solution decreases by 1

21
Q

a dilute acid is…

A

an acid in which the concentration of the water mixed in the acid is higher than the concentration of the acid itself

22
Q

What is a neutralisation reaction?

A

A reaction between an acid and a base

23
Q

What is an acid-alkali neutralisation

A

A reaction in which hydrogen ions(H+) from the acid react with hydroxide ions(OH-) from the alkali to form water