Acetylene gas, C2H2, reacts with oxygen according to the following equation. If 46.0 g of acetylene reacts with 100.0 g of oxygen, what is the theoretical yield of heat produced from the reaction?

Question

___ C2H2(g) + ___ O2(g) → ___ CO2(g) + ___ H2O(g); balanced reaction produces 1299 kJ

Answer 1

1. Balance the equation.
2. This is a limiting reagent (LR) problem. Determine the LR.
3. Convert mols reactants to heat produced. This is the theoretical yield.

Answer 2

2C2H2+5O ---> 4CO2+2H2O