1. mols C2H6 = grams/molar mass = ?
2. mols O2 = grams/molar mass = ?
3. Convert mols C2H6 to mols CO2 using the coefficients in the balanced equation.
4. Do the same with mols O2 to mols CO2.
5. In limiting regent problems, the SMALLER amount of CO2 produced is the correct value and the reagent producing that smaller value is the limiting reagent; the other reagent is the excess reagent.
If 152 grams of ethane (C2H6) are reacted with 231 grams of oxygen gas, what is the excess reactant?
2C2H6 + 7O2(g) → 4CO2(g) + 6H2O(g)
2 answers
19