Question

Which reaction is balanced correctly

A. C + O2 → 2CO2
B. CH4 + 4O2 → CO2 + 2H2O
C. C3H8 + 5O2 → 3CO2 + 4H2O
D. C6H12O6 + 3O2 → 6CO2 + 6H2O

Answer 1

C3H8 + 5O2 → 3CO2 + 4H2O .

This reaction is balanced correctly because number of atoms on reactant side and product side are same.

Answer 2

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[C. C3H8 + 5O2 → 3CO2 + 4H2O]

According to law of conservation of mass, Chemical equation (C) is correct because the elements in reactant side and products side which are equal.

As we know that, laws of conservation of mass states that the number of elements in reactant side and the number of elements in product side are equal.

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