O lvl Chem: Periodic Table

D92/P3/B3

The diagram shows some properties and reactions involving substances A, B, C, D and E.

(a) Identify A, B, C, D and E.

(b)
(i) Write an equation for the reaction between A and aqueous sodium hydroxide solution.
(ii) Write an equation for the reaction between D and carbon.

(c) Suggest a use for E.

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Answer:

A - iron (II) Sulphate, FeSO₄
B – iron (II) Hydroxide,FE(OH)₂
C – barium sulphate,BaSO₄
D – iron (III) oxide,Fe₂O₃
E – iron ,Fe

(b)(i) FeSO₄(aq) + 2NaOH(aq) + Fe(OH)₂(s) +
Na₂SO₄(aq)

(ii) 2Fe₂O₃(s) + 3C(s) à 4Fe(s) + 3CO₂(g)

(c)Making Iron nails.

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