If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Standard cell potentials and equilibrium constants

You might need: Calculator

Problem

For the following cell,
X(s)|XA2+(aq)||YA2+(aq)|Y(s)
EAocell=0.2955V
If the equilibrium constant for the above reaction is given as a×10b, calculate b.
Given: antilog10=1010.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi