Question

In reaction, 2 SO2 + O2 ----> 2 SO3, when 1mole of SO2 and 1 mole of O2 are made to react to completion
(1) All the oxygen will be consumed
(2) 1.0 mole of SO2 will be produced
(3) 0.5 mole of SO2 is remained
(4) All of these

Answer 1

4) all of these
this is the answer......