How many ‘mL’ of perhydrol is required to produce sufficient oxygen which can be used to completely convert 2L of SO2 gas to SO3 gas

Perhydrol means 30% solution of H2O2. H2O2 decomposes as 2H2O2→2H2O+O2 volume strength of 30% H2O2 solution is 100 that means 1 mL of this solution on decomposition gives 100mL oxygen.SO2+12O2→SO31L         12L         1L2L        1L            2L Since, 100 mL of oxygen is obtained by =1mL of H2O2 ∴1000mL of oxygen will be obtained by =1100×1000mL of H2O2                                                                             =10 mL of H2O2