Which of the Following Is the Balanced Overall Reaction and Standard

question 83

Multiple Choice

Which of the following is the balanced overall reaction and standard cell potential of an electrochemical cell constructed from half-cells with the given half reactions? Pt²⁺(aq) + 2 e− → Pt(s) ; E° = 1.180 V
Pb²⁺(aq) + 2 e− → Pb(s) ; E° = -0.130 V

• A) Pt²⁺(aq)+ Pb(s)→ Pt(s)+ Pb²⁺(aq); = 1.310 V
• B) Pt(s)+ Pb²⁺(aq)→ Pt²⁺(aq)+ Pb(s); = −1.310 V
• C) Pt²⁺(aq)+ Pb²⁺(aq)→ Pt(s)+ Pb(s); = 1.050 V
• D) Pt²⁺(aq)+ Pb(s)→ Pt(s)+ Pb²⁺(aq); =0.655 V
• E) Pt(s)+ Pb²⁺(aq)→ Pt²⁺(aq)+ Pb(s); = −0.655 V

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Definitions:

Temperature Coefficient

A parameter that quantifies the change in a physical property of a material as the temperature changes.

Capacitance Change

A variation in the ability of a capacitor to store an electrical charge, affected by factors such as distance between plates, area of plates, and the dielectric material.

Variable Capacitors

Capacitors whose value can be changed.

Dielectric

An insulating material that can be polarized by an electric field, enhancing the capacitor's ability to store an electric charge.