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Question

Write a balanced equation for the reactions that occur when:
(i) Iron react with steam.
(ii) Calcium and potassium react with water.

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Solution

(i) 3Fe + 4H2O(g)Fe3O4 + H2

Iron Steam Iron(II,III) oxide

(ii) Ca(s) + 2H2O(l)Ca(OH)2(aq) + H2(g)

Calcium hydroxide

K(s) + 2H2O(l)2KOH(aq) + H2(g)

Potassium hydroxide


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