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contestada

When the equation H2O2 + H2O + O2 is
completely balanced, the sum of all the coefficients
will be
(1) 5
(2) 8
(3) 3
(4) 4

Respuesta :

Retired

Answer: 1. 5

2H202 -> 2H2O + O2 ; 2 + 2 +1 = 5

Explanation:

(1) 5

We need to write the balanced equation first.

2H₂O₂ → 2H₂O+O₂

In the reactant side: the total number of coefficient is 2

In the product side: the total number of coefficient is 2+1=3

Thus, total number of coefficient in the complete balanced chemical equation is 2+3=5.

Therefore, the correct option is option 1.

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