Iron(II) Ion Test Quiz

What is observed when iron(II) ions react with sodium hydroxide?

• A red precipitate forms.

• A green precipitate forms.

• No precipitate forms.

• A blue precipitate forms.

What happens to the green precipitate when excess sodium hydroxide is added?

• It changes to a red precipitate.

• It dissolves completely.

• It turns blue.

• It remains insoluble.

What is the result of reacting iron(II) ions with ammonia?

• A blue precipitate forms.

• A green precipitate forms.

• No precipitate forms.

• A red precipitate forms.

What is the common product formed in both reactions with sodium hydroxide and ammonia?

• Iron hydroxide

• Iron sulfate

• Iron nitrate

• Iron chloride

What ions do iron(II) ions react with to form the green precipitate?

• Hydroxide ions

• Nitrate ions

• Chloride ions

• Sulfate ions