Chemistry - Hydrogen and Its compound Question with Solution | TestHub
Consider the following reactions : (i)
(ii) (iii) (iv) But-2-ene + Z Butane (v) dil. (vi) conc. (vii) (viii) Aq. (at cathode) (ix) Aq. (at cathode) (x)
Select the set(s) in which Z is correctly represented as the same gaseous product formed in the reaction above.
Options:(select one or more)
Answer:
Solution:
In reactions (i), (ii), (iii), (iv), (vii), (viii), and (x): Z is hydrogen gas (H₂), as it is produced by active metals with water/acids, used in industrial reductions/hydrogenations, and released at the cathode during brine electrolysis.
In reaction (ix): Electrolysis of aqueous AgNO₃ deposits silver metal (Z = Ag) at the cathode because Ag⁺ has a higher reduction potential than H⁺.
Since Z = H₂ matches for options (A), (B), and (C) but not (D), the correct options are A, B, and C.
