91. Solving a chemistry problem
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91. Solving a chemistry problem
614. Calculate the EMF of the next element, knowing the standard potentials E ° (Cd2 / Cd) \u003d -0.403 V and E ° (Ag / Ag) \u003d 0.799 V:
Pt(t) | Cd(t) | Cd((NO3)2) (aq, 0.1002 mol/l) || AgNO3(aq, 6.46×10-5 mol/l) | Ag(t)| Pt(t)
To calculate the activity coefficients, take the following ion radii:
е(Ag ) = 2.5 Å, е(Cd2 ) = 5 Å.
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