A balanced equation that represents an overallcell reaction is shown. Choose the
ID: 683121 • Letter: A
Question
A balanced equation that represents an overallcell reaction is shown. Choose the cell notation which correspondsto the electrochemical cell that is described by this equation.Explain your response.2Ag(s) + Hg22+(aq) 2Ag+(aq)+ 2Hg(l)
Ag(s) l Ag+(aq) llHg22+(aq) l Hg(l) Ag(s), Ag+(aq) llHg22+(aq), Hg(l) Hg(l) l Hg22+(aq) llAg+(aq) l Ag(s) Pt(s) l Ag+(aq) llHg22+(aq) l Pt(s) A balanced equation that represents an overallcell reaction is shown. Choose the cell notation which correspondsto the electrochemical cell that is described by this equation.Explain your response.
2Ag(s) + Hg22+(aq) 2Ag+(aq)+ 2Hg(l)
Ag(s) l Ag+(aq) llHg22+(aq) l Hg(l) Ag(s), Ag+(aq) llHg22+(aq), Hg(l) Hg(l) l Hg22+(aq) llAg+(aq) l Ag(s) Pt(s) l Ag+(aq) llHg22+(aq) l Pt(s)
Explanation / Answer
In the above reaction oxidation half cell : 2 Ag(s) ---------> 2Ag+(aq) + 2 e- Reduction half cell : Hg22+(aq) + 2 e- -----------> 2Hg(l)During the representation of the cell reaction,oxidation is represented on the left hand side and reduction is onthe right hand side seperated by a double line. When phase ischanged it is seperated by a single line. So the cell representation is Ag(s) l Ag+(aq) llHg22+(aq) l Hg(l) Reduction half cell : Hg22+(aq) + 2 e- -----------> 2Hg(l)
During the representation of the cell reaction,oxidation is represented on the left hand side and reduction is onthe right hand side seperated by a double line. When phase ischanged it is seperated by a single line. So the cell representation is Ag(s) l Ag+(aq) llHg22+(aq) l Hg(l)
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