Question H17

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Miriam Villarreal 1J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

Question H17

Postby Miriam Villarreal 1J » Sun Oct 06, 2019 6:11 pm

Steps into solving H17.
Write a balanced equation for the complete combustion (reaction with oxygen gas) of liquid heptane , C7H16 a component typical of the hydrocarbons in gasoline to carbon dioxide gas and water vapor

Sidharth D 1E
Posts: 98
Joined: Sat Aug 24, 2019 12:17 am

Re: Question H17

Postby Sidharth D 1E » Sun Oct 06, 2019 7:41 pm

Step 1: Writing the base equation:

C7H16(g) + O2(g) --> CO2(g) + H2O(g)

Step 2: Balance the number of Carbons and Hydrogens on both sides because there are only one compound on either side that includes carbon, and one compound on either side that includes hydrogen:

C7H16(g) + O2(g) --> 7CO2(g) + 8H2O(g)

Step 3: Calculate the number of oxygen molecules on the right side: 2(7) + (8) = 22

Step 4: Divide that number by 2 and put that coefficient next to the number of oxygen diatomic molecules, and the equation is balanced!

C7H16(g) + 11O2(g) --> 7CO2(g) + 8H2O(g)


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