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    A is calcium oxide (limewater)
    Apart from that, all the other answers are correct.
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    (Original post by jamal tyrone)
    A is calcium oxide (limewater)
    Apart from that, all the other answers are correct.
    Calcium hydroxide ...

    .. but this should give a ppt with silver ions!

    And D can't be potassium sulfate as it would give a white ppt with silver ions also.
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    And whilst we're picking holes, iron(III) won't give a colourless flame.
 
 
 
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Updated: February 10, 2018
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