Question

Which is a balanced chemical equation? A. C7H16 + 5O2 6CO2 + 4H2O B. C7H16 + 11O2 7CO2 + 8H2O C. C7H16 + 14O2 7CO2 +5H2O D. C7H16 + 22O2 14CO2 + 16H2O

Answer 1

`\boxed{\text{B.}}`

Step-by-step explanation:

B.

`\rm C$_7$H_(16)$ + 11O$_2$ $\longrightarrow \,$ 7CO$_2$ + 8H$_2$O`

BALANCED. 7C, 16H, and 22O on each side of equation.

A.

`\rm C$_7$H$_(16)$ + 5O$_2$ $\longrightarrow \,\rm 6CO$_2$ + 4H$_2$O`

NOT BALANCED. 7C on left and 6C on right.

C.

`\rm C$_7$H$_(16)$ + 14O$_2$ $\longrightarrow \,$ 7CO$_2$ + 5H$_2$O`

NOT BALANCED. 16H on left and 10H on right.

D.

`\rm C$_7$H$_(16)$ + 22O$_2$ $\longrightarrow \, $ 14CO$_2$ + 16H$_2$O`

NOT BALANCED. 7C on left and 14C on right.