Justify the statement: If \[\ce{E^{\circ}_{{M^{n+}/{M}}}}\] is positive, Mn+ can be reduced to M by H2 gas under standard conditions.

If \[\ce{E^{\circ}_{{M^{n+}/{M}}}}\] is positive, it means that Mn+ ions have a greater tendency to get reduced than H+ ions.Therefore, H2 gas cannot reduce Mn+ to M under standard conditions.Instead, Mn⁺ ions can oxidise H2 gas to H+, and themselves get reduced to M.

English

CISCEISC (Science) ISC Class 12

Question Papers

Question Papers346

Textbook Solutions9677

MCQ Online Mock Tests

Important Solutions5547

Concept Notes & Videos596

Time Tables15

Syllabus

Justify the statement: If E∘Mn+/M is positive, Mn+ can be reduced to M by H2 gas under standard conditions. - Chemistry (Theory)

Question

Justify the statement:

If \[\ce{E^{\circ}_{{M^{n+}/{M}}}}\] is positive, Mⁿ⁺ can be reduced to M by H₂ gas under standard conditions.

Justify

Solution

If \[\ce{E^{\circ}_{{M^{n+}/{M}}}}\] is positive, it means that Mⁿ⁺ ions have a greater tendency to get reduced than H⁺ ions.
Therefore, H₂ gas cannot reduce Mⁿ⁺ to M under standard conditions.
Instead, Mn⁺ ions can oxidise H₂ gas to H⁺, and themselves get reduced to M.