Chemistry - Hydrogen and Its compound Question with Solution | TestHub
is an important chemical, used in pollution control treatment.
Number of CORRECT information regarding
(i) Industrially it can be prepared by auto oxidation of 2-ethylanthraquinol
(ii) has greater boiling point and hydrogen bond strength as compared to water. (iii) For dihedral angle is greater in gaseous phase as compared to solid phase (at 110 K).(iv) It gives green solution containing when mixed with yellow solution of chromate in acidic medium.
(v) is stored in wax-lined glass or plastic vessels in dark & urea can be added as a stabilizer (vi) is a polar & non-planar molecule which solution is knowns as per-hydrol
Answer:
Solution:
(i) Correct: Industrially, H₂O₂ is prepared via the auto-oxidation of 2-ethylanthraquinol.
(ii) Incorrect: Water has a greater hydrogen bond strength compared to hydrogen peroxide.
(iii) Correct: The dihedral angle of H₂O₂ is in the gas phase, which is larger than in the solid phase.
(iv) Incorrect: Chromate reacts with H₂O₂ in an acidic medium to form a deep blue solution of CrO₅, not a green Cr³⁺ solution.
(v) Correct: It decomposes on exposure to light and rough surfaces, so it is stored in wax-lined/plastic vessels in the dark with urea as a stabilizer.
(vi) Incorrect: Perhydrol is a 30% by mass (w/w) solution, not w/v.
