Question

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the

chemical equation: 1
DH₂0-DH₂ + O₂
Intro
Lot 10
Done

Answer 1

D = 2

2H₂0 → 2H₂ + O₂

Step-by-step explanation:

I'll assume that "DH₂0-DH₂ + O₂" is meant to read:

DH₂0 → DH₂ + O₂

Water decomposes into oxygen (O2) and hydrogen (H2) molecules.

We are to find a vale of D that will balance this equation.

DH₂0 → DH₂ + O₂

Count the atoms on both sides of the equation, assuming D is 1 at this point:

(D = 1)

Element Reactant Product Balanced?

H 2 2 Yes

O 1 2 No

We need an additional oxygen atom on the reactant side, so lets try D=2:

2H₂0 → 2H₂ + O₂

Element Reactant Product Balanced?

H 4 4 Yes

O 2 2 Yes

The equation is balanced for D = 2:

2H₂0 → 2H₂ + O₂