Question

write the steps deducing the chemical formula of compound sodium carbonate​

Answer 1

Answer:

Step 1 : Write the symbols of the radicals. Step 2 : Write the valency below the respective radical. Step 3 : Cross-multiply symbols of radicals with their respective valency. Step 4 : Write down the chemical formula of the compound

Answer 2

Answer:

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.