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Chemical Reactions

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Question

write the formulas and names of the compounds formed between:
rn
rn
sodium and carbonate ions
rn
aluminium and sulphate ions
rn
barium and chloride ions

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Solution

The chemical formulae of the compounds between the said ions are as follows
1) Sodium and carbonate ion
The chemical formula of the compound is Na₂CO₃ and its name is sodium chloride
2) Aluminium and sulphate ions
The chemical formula of the compound is Al₂(SO₄)₃ and its name is aluminium sulphate.
3) Barium and chloride ions
The chemical formula of the compound is BaCl₂ and its name is barium chloride.

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Q. (a) write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
(b) an element Y has a valency of 4. Write the formula for its:
(i) chloride (ii) oxide (iii) sulphate (iv) carbonate (v) nitrate

Write the formulae of the salts given below.

Potassium sulphate, sodium sulphate, calcium sulphate, magnesium sulphate, copper sulphate, sodium chloride, sodium nitrate, sodium carbonate and ammonium chloride.

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