Answer
40.48 liters
Step-by-step explanation
Given: that:
n = mole = 1 mol
P = Pressure = 1 atm
T = Temperature = 220 °C = (220 + 273K) = 493 K
What to find:
The volume of the product.
Step-by-step solution:
The volume, V of the product can be calculated using the ideal gas equation:
PV = nRT
Putting the values of the parameters and molar gas constant, R = 0.0821 liter·atm/mol·K into the formula, we have:

Thus, the volume of the product, upon reaction completion, will occupy 40.48 liters.