where R=8.314 J/(mol⋅K), T is the Kelvin temperature, n is the number of moles of electrons...

where R=8.314 J/(mol⋅K), T is the Kelvin temperature, n is the number of moles of electrons transferred in the reaction, and F=96,485 C/mol e−.

At 68.0 ∘C , what is the maximum value of the reaction quotient, Q, needed to produce a non-negative E value for the reaction

SO42−(aq)+4H+(aq)+2Br−(aq)⇌Br2(aq)+SO2(g)+2H2O(l)

In other words, what is Q when E=0 at this temperature?

Express your answer numerically to two significant figures.

Expert Solution

queen_honey_blossom answered 1 year ago

Where n is the number of moles of electrons and F=96,500J/V⋅mol e− is the Faraday constant.

Part A Cell Potential and Free Energy of a Lithium–Chlorine Cell In thermodynamics, we determine the spontaneity of a reaction by the sign of ΔG. In electrochemistry, spontaneity is determined by the sign of E∘cell. The values of ΔG and E∘cell are related by the following formula: ΔG∘=−nFE∘cell where n is the number of moles of electrons and F=96,500J/V⋅mol e− is the Faraday constant. Part B Calculate the free energy ΔG∘ of the reaction. Express your answer in kilojoules. Part...

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