Which of the following statements are correct?(i) S–S bond is presen

1.	Which of the following statements are correct?(i) S–S bond is present in H2S2O6.(ii) In peroxosulphuric acid (H2SO5) sulphur is in +6 oxidation state.(iii) Iron powder along with Al2O3 and K2O is used as a catalyst in the preparation of NH3 by Haber’s process.(iv) Change in enthalpy is positive for the preparation of SO3 by catalytic oxidation of SO2.
Answer» (i), (ii) (i) S–S bond is present in H₂S₂O₆. (ii) In peroxosulphuric acid (H₂SO₅) sulphur is in +6 oxidation state.

Which of the following statements are correct?(i) S–S bond is present in H2S2O6.(ii) In peroxosulphuric acid (H2SO5) sulphur is in +6 oxidation state.(iii) Iron powder along with Al2O3 and K2O is used as a catalyst in the preparation of NH3 by Haber’s process.(iv) Change in enthalpy is positive for the preparation of SO3 by catalytic oxidation of SO2.

Answer»

(i), (ii)

(i) S–S bond is present in H₂S₂O₆.

(ii) In peroxosulphuric acid (H₂SO₅) sulphur is in +6 oxidation state.