Question

Ethane (C2H6) on complete combustion gave CO2 and water. It shows that the results are in accordance with the law of conservation of mass. Then, the coefficient of oxygen is equal to
A. 3
B. 5/2
C. 2
D. 7/2

Answer 1

Answer:

2 answer

is2.2

2

2

I hope that

it's help full to u !!

Answer 2

Given:

Ethane undergoes complete combustion in the presence of oxygen to give carbon dioxide and water.

To Find:

The coefficient of oxygen

Solution:

What is the law of conservation of mass?

• The law of conservation of mass can be explained as:

        "Mass can neither be created nor destroyed in the universe."

• This law implies that the reactants must be equal to the number of products in a chemical reaction.

Combustion of Ethane

• The combustion of ethane (C₂H₆) in the presence of oxygen (O₂) gives carbon dioxide (CO₂) and water (H₂O).
• The equation is written as:

                       C₂H₆ + O₂ → CO₂ + H₂O

• For 1 mole of ethane, the equation can be written as:

                       C₂H₆ + $\frac{7}{2}$O₂ → 2CO₂ + 3H₂O

Thus, we can see that the coefficient of oxygen for the combustion of 1 mole of ethane is $\frac{7}{2}$.

Therefore, the correct option is D. $\frac{7}{2}$