precipitates Flashcards by Isabella Andere

Q

aluminium ion

A

Al3+

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Q

aluminium precipitate colour

A

white

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Q

aluminium in sodium hydroxide excess

A

soluble

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Q

aluminium in ammonia

A

no change

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Q

calcium ion

A

Ca2+

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Q

calcium precipitate colour

A

white

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Q

calcium in excess sodium hydroxide

A

insoluble

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Q

calcium in ammonia

A

dissolves

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Q

copper (ii) ion

A

Cu2+

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Q

copper (ii) precipitate colour

A

blue

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Q

copper (ii) in excess sodium hydroxide

A

insoluble

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Q

copper (ii) in ammonia

A

dissolves

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Q

iron (ii) ion

A

Fe2+

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Q

iron (ii) precipitate colour

A

blue-green

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Q

iron (ii) in excess sodium hydroxide

A

insoluble

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Q

iron (ii) in ammonia

A

doesn’t dissolve

Q

iron (iii) ion

A

Fe3+

Q

iron (iii) precipitate colour

A

orange

Q

iron (iii) in excess sodium hydroxide

A

soluble

Q

iron (iii) in ammonia

A

doesn’t dissolve

Q

zinc (ii) ion

A

Zn2+

Q

zinc (ii) precipitate colour

A

white

Q

zinc (ii) in excess sodium hydroxide

A

insoluble

Q

zinc (ii) in ammonia

A

dissolves

Q

chromium (iii) ion

A

Cr3+

Q

chromium (iii) in excess sodium hydroxide

A

soluble

Q

chromium (iii) in ammonia

A

doesn’t dissolve