Question

Complete and balance each combustion reaction:

A) 2S(s) + 3O2(g) → 2SO3(g)
B) C7H16(l) + 11O2(g) → 7CO2(g) + 8H2O(g)
C) C4H10O(l) + 6.5O2(g) → 4CO2(g) + 5H2O(g)
D) 2CS2(1) + 7O2(g) → 2CO2(g) + 2SO2(g)

Answer 1

The question involves correcting and explaining the balancing of combustion reactions. Reactions A) and B) are already correctly balanced. For reaction C), the number of O2 molecules should be 6 instead of 6.5. Reaction D) requires a different mole ratio: 2CS2(l) + 15O2(g) → 4CO2(g) + 4SO2(g).

Step-by-step explanation:

The student's question is about completing and balancing combustion reactions. Here's a correction and an explanation for the given reactions:

• A) The provided reaction 2S(s) + 3O2(g) → 2SO3(g) is already balanced.
• B) The balanced reaction for C7H16(l) combustion is: C7H16(l) + 11O2(g) → 7CO2(g) + 8H2O(g), which is also correctly balanced.
• C) For the combustion of C4H10O(l), the balanced reaction is: C4H10O(l) + 6O2(g) → 4CO2(g) + 5H2O(g), replacing the incorrect 6.5 moles of O2 with 6 moles.
• D) The correct balancing for carbon disulfide (CS2) combustion is: 2CS2(l) + 15O2(g) → 4CO2(g) + 4SO2(g).