Problem: 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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FREE Expert Solution

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 + O2 (g) →  4CO2 (g) + 6H2O (l)

reactants                                     products

C  - 2 4                                         C - 1 4

H   - 6 12                                       H - 2 12

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Problem Details

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 CO(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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Based on our data, we think this problem is relevant for Professor Marks' class at ASU.