011. Solving a chemistry problem
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20. For a galvanic cell composed of a pair of metals (determined in accordance with option number), immersed in solutions of its own salts at T = 298K:
˗ draw up an electrochemical circuit,
˗ write the equations of electrode processes and current-forming reactions,
˗ calculate the standard emf;
˗ will the EMF of a galvanic cell change if we take solutions of salts of not 1 M, but 0.01 M concentration? Justify your answer using appropriate calculations.
Option Pair of metals
20 Iron and lead
˗ draw up an electrochemical circuit,
˗ write the equations of electrode processes and current-forming reactions,
˗ calculate the standard emf;
˗ will the EMF of a galvanic cell change if we take solutions of salts of not 1 M, but 0.01 M concentration? Justify your answer using appropriate calculations.
Option Pair of metals
20 Iron and lead
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