. Assuming that the oxygen gas is collected at P = 755 mm Hg and T = 305 K with the chemical equation 2KClO3(s) → 2KCl(s) + 3O2(g), how many liters of oxygen gas are produced when 294 g of KClO3 completely react as used in the ignition of fireworks? Solve to get the correct answer. A. 3.60 L B. 10.0 L C. 22.4 L D. 90.7 L
Answers & Comments
SOLUTION:
Step 1: List the given values.
Step 2: Calculate the number of moles of O₂ collected.
Based on the balanced chemical equation, 2 moles of KClO₃ is stoichiometrically equivalent to 3 moles of O₂.
Step 3: Calculate the volume of O₂ collected using ideal gas equation.
Hence, the answer is D. 90.7 L.