Chemistry · May / June 2016 · Paper 22 · Question A5
5070
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A5 The statements give some of the chemical properties of cobalt and its compounds. • Cobalt does not react with cold water. • Cobalt fizzes slowly with dilute hydrochloric acid. • Cobalt does not react with aqueous zinc nitrate. • Cobalt reacts with aqueous silver nitrate. • Cobalt(II) oxide reacts with magnesium to form cobalt.
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A5(a)[2]
A5(b)[1]
A5(c)[1]
A5(d)[2]
A5(e)[1]
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