State three pieces of information that a balanced chemical equation gives, and two that it does not.
The Language of Chemistry
Original Khojo Papers practice question — not from a past board paper.
Fe2O3 + 3CO → 2Fe + 3CO2
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Two iron atoms are freed and three oxygen atoms have to be carried away, each by one molecule of carbon monoxide.
From the same topic and chapter, at a similar level.
State three pieces of information that a balanced chemical equation gives, and two that it does not.
The Language of Chemistry
Balance the equation: Al + H2SO4 → Al2(SO4)3 + H2
The Language of Chemistry
Why must a chemical equation be balanced?
The Language of Chemistry
Balance the equation: KClO3 → KCl + O2
The Language of Chemistry
What is valency? State the valency of oxygen, aluminium and the sulphate radical.
The Language of Chemistry
Write the formulae of calcium carbonate, aluminium sulphate and ammonium chloride.
The Language of Chemistry