What will be the standard cell potential of galvanic cell with the following reaction?2Cr(s)+3Cd2+(aq)→2Cr3+(aq)+3Cd(s)[Given E°Cr3+/Cr=−0.74V and E°Cd2+/Cd=−0.40V]
Question
What will be the standard cell potential of galvanic cell with the following reaction?2Cr(s)+3Cd2+(aq)→2Cr3+(aq)+3Cd(s)[Given E°Cr3+/Cr=−0.74V and E°Cd2+/Cd=−0.40V]
Solution
To find the standard cell potential (E°cell) for the given reaction, we need to use the Nernst equation:
E°cell = E°cathode - E°anode
First, we need to identify the cathode and anode in the reaction. The cathode is where reduction occurs, and the anode is where oxidation occurs.
In the given reaction, Cr is getting oxidized to Cr3+ and Cd2+ is getting reduced to Cd. So, Cr is the anode and Cd2+ is the cathode.
Given that E°Cr3+/Cr = -0.74V (this is the oxidation, so it's for the anode) and E°Cd2+/Cd = -0.40V (this is the reduction, so it's for the cathode).
Substituting these values into the Nernst equation gives:
E°cell = (-0.40V) - (-0.74V) = 0.34V
So, the standard cell potential of the galvanic cell for the given reaction is 0.34V.
Similar Questions
What is the standard cell potential for the reaction 2 Cr + 3 Pb²⁺ → 3 Pb + 2 Cr³⁺?Standard Reduction PotentialsE° (V)Pb²⁺(aq) + 2e⁻ → Pb(s)-0.13Cr³⁺(aq) + 3e⁻ → Cr(s) -0.74
. For the reaction below at standard conditions, what would be DG° ?2Al(s) + 3Mn2+(aq) → 2Al3+(aq) + 3Mn(s) ; E° cell = 0.49 V-284000 kJ-284 kJ-142 kJ-142,000 kJ
Depict the galvanic cell in which the reactionZn(s) + 2Ag+(aq) —-> 7M2+(aq) + 2Ag (s) takes place. Further show:(i) Which of the electrode is negatively charged?(ii) The carriers of the current in the cell.(iii) Individual reaction at each electrode.
What is the standard cell potential of a cell made of theoretical metals Ma/Ma and Mb/Mb if the reduction potentials are –0.19 V and –0.85 V, respectively?Group of answer choices+1.04 V+0.66 V–1.04 V–0.66 V
. Choose the correct line notation for the following galvanic cell reaction:2Al(s) + 3Cu+2(aq) → Al+3(aq) + 3Cu(s)Line Notation: Cu2+(aq) | Cu(s) || Al(s) | Al3+(aq)Al3+(aq) | Al(s) || Cu(s) | Cu2+(aq)Al(s) | Al3+(aq) || Cu2+(aq) | Cu(s)
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.