Acids and Alkalis Flashcards by Laurian Blackwell

Q

What do acids produce in aqueous solutions?

A

H+ ions

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Q

Aqueous solutions of alkalis contain….

A

hydroxide ions (OH-)

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Q

The pH scale (0-14) is a measure of…

A

acidity or alkalinity

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Q

A solution with pH 7 is…

A

neutral

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Q

Aqueous solutions of acids have a pH…

A

less than 7

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Q

Aqueous solutions of alkalis have a pH…

A

greater than 7

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Q

Acid + Alkalis –>

A

Salt + water

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Q

Ionic equation for neutralisation

A

H+ + OH- –> H2O

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Q

A strong acid is…

A

completely ionised in solution

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Q

A weak acid is

A

partially ionised in solution

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Q

Examples of strong acids

A

Hydrochloric, sulfuric and nitric

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Q

An example of a weak acid

A

ethanoic acid

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Q

The stronger the acid…

A

the lower the pH

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Q

As the pH decreases by 1 unit, what happens to the concentration of H+ ions?

A

Increase by a factor of 10.

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