C\(_x\)H\(_y\) + 9O\(_2\) \(\rightarrow\) 6CO\(_2\) + 6H\(_2\)O The hydrocarbon, C\(_x\)H\(_y\), in the reaction above is...
C\(_x\)H\(_y\) + 9O\(_2\) \(\rightarrow\) 6CO\(_2\) + 6H\(_2\)O The hydrocarbon, C\(_x\)H\(_y\), in the reaction above is most likely
- A) an alkane
- B) a benzene
- C) an alkene
- D) alkyne
Correct Answer: C) an alkene
Explanation
To determine the type of hydrocarbon (CxHy) involved in the reaction, we can first balance the equation and find the general formula of the hydrocarbon. The balanced equation is:
\(C_xH_y + 9O_2 \rightarrow 6CO_2 + 6H_2O\)
Now, we can equate the number of carbon and hydrogen atoms on both sides of the equation:
Carbon atoms: 6 = x
Hydrogen atoms: 12 = y
So, the hydrocarbon has the formula C6H12. Now, let's consider the types of hydrocarbons given in the options:
Option A: Alkane - Alkanes have the general formula CnH2n+2. In this case, C6H12 does not fit the formula for an alkane.
Option B: Benzene - Benzene has the formula C6H6, which is not the same as the given hydrocarbon.
Option C: Alkene (Correct) - Alkenes have the general formula CnH2n. C6H12 fits this formula, so the hydrocarbon is most likely an alkene.
Option D: Alkyne - Alkynes have the general formula CnH2n-2. C6H12 does not fit the formula for an alkyne.
In conclusion, the hydrocarbon in the reaction is most likely an alkene, which is consistent with the correct option (C).

