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ICSE Class 9 Chemistry Question 34 of 55

ICSE Questions Set in Previous Years — Question 34

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34
Question

Question 34

An element X is trivalent. Write the balanced equation for the combustion of X in oxygen.

Answer

Valency of X is 3+ and that of Oxygen is 2-

By interchanging the valency number and shifting it to the lower right side of the atom or radical, we get the formula : X2O3

Equation for the combustion of X in oxygen: 4X + 3O2 ⟶ 2X2O3