The following cell was found to have a potential of 0.2897
(a) When the solution of known magnesium activity was
replaced with an unknown solution, the potential was found to be 0.2041 V. What
was the pMg of this unknown solution?
(b) Assuming an uncertainty of 60.002 V in the junction
potential, what is the range of Mg2+ activities within which the
true value might be expected?
(c) What is the relative error in [Mg2+]
associated with the uncertainty in Ej ?