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Question:
Which of the following reactions is not correct according to the law of
conservation of mass.
(i) 2Mg(s) + O2(g) →2MgO(s)
(ii) C3H8(g) + O2(g) → CO2(g) + H2O(g)
(iii) P4(s) + 5O2(g) → P4O10(s)
(iv) CH4(g) + 2O2(g) → CO2(g) + 2H2O (g)
Solution:
Option (ii) C3H8(g) + O2(g) → CO2(g) + H2O(g)
is the answer.
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