Reactions of Metal-Aqua Ions (AQA A-Level Chemistry): Quizzes

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Reactions of Metal-Aqua Ions
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What is the colour of aqueous Fe2+Fe^{2+} ions?

Pale green

What happens when excess ammonia is added to Cu2+Cu^{2+} ions?

Dark blue solution forms

What happens when excess OH−OH^- is added to Al3+Al^{3+} ions?

White precipitate redissolves

What colour precipitate does Fe3+Fe^{3+} form with sodium hydroxide?

Red-brown

What concentration are the reagent solutions used in this practical?

1.0 mol dm−3^{-3}

What colour change occurs over time to the Fe2+Fe^{2+} precipitate with OH−OH^-?

Turns orange-brown

What is the colour of aqueous Al3+Al^{3+} ions?

Colourless

Which ion shows effervescence when reacted with CO32−CO_3^{2-}?

Fe3+Fe^{3+}

What colour precipitate forms when Cu2+Cu^{2+} reacts with OH−OH^-?

Light blue

What colour precipitate forms initially when Fe2+Fe^{2+} reacts with NH3NH_3?

Dark green

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