In a combustion reaction a hydrocarbon reacts with oxygen to produce CO2 and H2O.
To balance: add coefficients so that number of atoms of each element on both sides are equal.
2C2H4(OH)2 + 5O2 (g) → 4CO2 (g) + 6H2O (l)
C – 2 4 C – 1 4
H – 6 12 H – 2 12
Determine the balanced equation for the reaction that occurs when ethylene glycol, C2H4(OH)2, burns in air.
a) C2H4(OH)2 (l) + 3 O2 (g) → 2 CO2 (g) + 3 H2O(g)
b) C2H4(OH)2 (l) + 5 O(g) → 2 CO2 (g) + 3 H2O(g)
c) 2 C2H4(OH)2 (l) ) + 5 O2 (g) → 4 CO2(g) + 6 H2O(g)
d) 4 C2H4(OH)2 (l) + 10 O2 (g) → 8 CO2 (g) + 12 H2O(g)
e) C2H4(OH)2 (l) + 5/2O2 (g) → 2 CO2 (g) + 3 H2O(g)
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Balancing Chemical Equations concept. You can view video lessons to learn Balancing Chemical Equations. Or if you need more Balancing Chemical Equations practice, you can also practice Balancing Chemical Equations practice problems.
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