Chemistryhard · Past Paper
What is the equivalent weight of Calcium Carbonate ($CaCO_3$)?
A100
B50
C40
D20
✓ Correct Answer: B — 50
Equivalent weight = Molar mass / Valency factor. For CaCO3, Molar mass = 100 and valency of Ca is 2, so 100/2 = 50.
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