The rate of formation of SO3 in the reaction 2SO2+O2→2SO3 is 50 g min−1. Hence, rate of disappearance of O2 is

For the given reaction,2SO2+O2→2SO3Given,The formation of SO3=50g/minThe rate of disappearance of O2 =?Rate equation,dO2dt=12dSO3dt=12×5080mole=12×58 moles of oxygen=516×16×2gmin−1=10gram/min