Metal hydroxides and testing for cations 4.8.3.2 Flashcards

1
Q

What is sodium hydroxide used for?

A

can be used to identify some metal ions (cations)

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2
Q

What is formed when sodium hydroxide and cations mix?

A

precipitates

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3
Q

What are white precipitates formed by?

A
  • Aluminium ions
  • Calcium ions
  • Magnesium ions
  • Zinc ions
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4
Q

What are the coloured precipitates formed?

A
  • Copper (II) - Blue
  • Iron (II) - Green
  • Iron (III) - Brown
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