Question

c) Calculate the empirical formula of a compound containing 20.00% magnesium, 26.70% sulphur and 53.30% oxygen. ​

Answer 1

Answer:

Solution

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Correct option is D)

Ratio of the number of moles of Magnesium, Sulphur and Oxygen is 0.05 : 0.05 : 0.20 which is equal to 1 : 1 : 4

That is, for every atom of Magnesium there is one atom of Sulphur and four atoms of Oxygen.

Thus the emperical formula is MgSO4.