Q. 143.8( 9 Votes )

Which of the following reactions is not correct according to the law of conservation of mass.
A. 2Mg(s) + O2 (g) 2MgO(s)

B. C3H8(g) + O2 (g) CO2 (g) + H2 O(g)

C. P4(s) + 5O2 (g) P4O10 (s)

D. CH4(g) + 2O2(g) CO2 (g) + 2H2O (g)

Answer :

Only in equation (ii), the reactants and products are not balanced.

The unbalanced equation goes against the law of conservation of mass.


The correct answer is (ii).

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