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3 years ago

19. Which of the following chemical equations represents

Chemistry

1 answer:

Lesechka [4]3 years ago

6 0

Answer:

C₃H₈ (g) + 5O₂(g) → 3CO₂ (g) + 4H₂O (l)

(option D. with the proviso that the subscripts of propane's chemical formula must be corrected)

Explanation:

<em>Propane</em> is the saturated hydrocarbon, alkane, with chemical formula C₃H₈ or CH₃CH₂CH₃.

The complete combustion of the hydrocarbons yield carbon dioxide (CO₂) and water (H₂O).

The chemical equation that represents this combustion is:

C₃H₈ (g) + O₂(g) → CO₂ (g) + H₂O (l) (skeleton equation: unbalanced)

Once you balance it, you get:

C₃H₈ (g) + 5O₂(g) → 3CO₂ (g) + 4H₂O (l)

Left side Right side

C 3 3

H 8 4×2 = 8

O 5×2 = 10 3×2 + 4 = 10

That equation corresponds to the option D. of the list, with the proviso that the subscripts of propane's chemical formula must be corrected

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Answer:

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