Single Answer MCQ
Q-00039823
When balancing the equation C2H6 + O2 → CO2 + H2O, which coefficient should be placed in front of O2?
1
3
2
7/2
3
5
4
2
Answer and Solution
Answer
B. 7/2
Solution:
The balanced equation results in C2H6 + 7/2 O2 → 2 CO2 + 3 H2O; thus, the coefficient in front of O2 is 7/2. The other options do not satisfy the balance of the equation.
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