What is the standard cell potential obtained from a cell at 25 degree C that con

Question

What is the standard cell potential obtained from a cell at 25 degree C that consists of one electrode in which aqueous mercury (I) ion is in contact with mercury metal when the other electrode consists of aqueous aluminum ions in contact with aluminum metal? Provide an answer correct to 2 significant figures if your answer is a 2 digit number and to three sig figs if your answer is a 3 digit number. For example. if you believe the correct answer is +0.66V, simply report.66. If you believe that the correct answer is -1.01V. simply report -1.01 Do not answer this question using scientific notation. Do not enter a positive Sign if your answer is a positive number. Do not pfov.de units for your answer

Explanation / Answer

The cell can be represented as

Hg/Hg+ // Al3+/Al

Standard cell potential = electrode potential of cathode(Al) - electrode potential of anodeZn)

= -1.66 - (+0.80)

= -2.46.

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