Question

what is the coefficient for O2 when the equation for combustion of C5H12 to CO2 and H2O is balanced ?
A. 6
B. 7
C. 8
D. 9

Answer 1

C is the correct answer.

Answer 2

The balanced chemical equation for the combustion of pentane has 8 as the coefficient of oxygen. Thus, option C is correct.

The balanced equation has been given by the law of conservation, where the atoms of each element in the products and the reactants have been equal.

The reaction for the combustion of  $\rm C_5H_1_2$ has been:

$\rm C_5H_1_2\;+\;O_2\;\rightarrow\;CO_2\;+\;H_2O$

The reaction has to be balanced to equate the number of atoms of each element on the product and the reactant side.

The reaction has been balanced as:

$\rm C_5H_1_2\;+\;8\;O_2\;\rightarrow\;5\;CO_2\;+\;6\;H_2O$

The balanced chemical equation for the combustion of pentane has 8 as the coefficient of oxygen. Thus, option C is correct.

For more information about the balanced equation, refer to the link:

https://brainly.com/question/2399130