Solution of task 256 of Chemistry Book Shimanovich 2003

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256. Draw up a scheme of a galvanic cell consisting of zinc and iron plates immersed in solutions of their salts. Write the electronic equations of the processes taking place on the anode and on the cathode. What concentration would it be necessary to take iron ions (mol / l) to make the element´s EMF equal to zero if [Zn2 +] = 0.001 mol / l?

Answer: 7.3 • 10-15 mol / l.


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