writing balanced equations

User Generated

lbhatpurz

Science

Description

Write a balanced equation for the combustion of octane (C8H18) Please show how you get this.

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Explanation & Answer

Gasoline = C8H18

Oxygen  = O2

Carbon dioxide = CO2

Water = H2O

Since 8 of C is involved we must have 8CO2

Since 18 of H is involved we must have 9 H2O

This accounts for 8*2 +9 =25 of Oxygen which is 12.5 O2

Thus 

C8H18+12.5 O2 = 8CO2+ 9H2O

or

2C8H18+25O2 = 16CO2+18H2O


Anonymous
Really great stuff, couldn't ask for more.

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