Home › CBSE Class 11 (Science) › Chemistry › Electrochemical Series › As per your syllabus, eqn 7.54, the balanced red…
As per your syllabus, eqn 7.54, the balanced reduction half-reaction for Cr₂O₇²⁻ in acidic medium gains how many electrons?
A12 e⁻
B3 e⁻
C14 e⁻
D6 e⁻
Answer & Solution
Correct answer: D. 6 e⁻
syllabus eqn 7.54: each Cr 6→3 gains 3 e⁻; two Cr → 6 e⁻ total.
Related questions
The electrolytes of the two half-cells are joined by a:The two portions of a galvanic cell are also called:In the Daniell cell, zinc dissolves at the anode and copper:A negative standard potential marks a reducing agent that is:Going from top to bottom of the table, the electrode potential:The weakest oxidising agent in the table of potentials is:The most powerful reducing agent in aqueous solution is:The weakest reducing agent in the table of potentials is: