Question

Write the steps in deducing the chemical formulae of the following compounds. Sodium sulphate, potassium nitrate,ferric phosphate, calcium oxide, aluminium hydroxide

Answer 1

Hey dear,

● Answers -
Chemical formula is deduced on the basis of cation & anion in the compound.

1) Sodium sulphate contains Na+ cation & (SO4)2- anion, thus molecular formula of sodium sulphate is Na2SO4.

2) Potassium nitrate contains K+ cation & (NO3)- anion, thus molecular formula of potassium nitrate is KNO3.

3) Ferric phosphate contains Fe2+ cation & (PO4)2- anion, thus molecular formula of ferrous phosphate is FePO4.

4) Calcium oxide contains Ca2+ cation & O2- anion, thus molecular formula of calcium oxide is CaO.

5) Aluminium hydroxide contains Al3+ cation & OH- anion, thus molecular formula of aluminum hydroxide is Al(OH)3.


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Answer 2

Explanation:

sodium sulphate

Na+. (SO4)2-

1. 2

Na2SO4

Potassium nitrate

K. NO3

1. 1

KNO3.

Ferric phosphate

Fe. PO4

3. 3

1. 1

FePO4

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