The cell Ag|AgCl(sat'd)||H+(a=x)glass electrode has a potential of -0.2094V when tne solution in the right hand compartment is a buffer of pH 4.006. The following potential are obtained when the buffer is replaced with unknowns:(a)-0.2806V and (b)-0.2132V. Calculate the pH and the hydrogen ion activity of each unknown.(c)Assuming an uncertainty of 0.001V in the junction potential,what is range of hydrogen ion activities within which the true value might be expected to lie?
The cell Ag|AgCl(sat'd)||H+(a=x)glass electrode has a potential of -0.2094V when tne solution in the right hand compartment is a buffer of pH 4.006. The following potential are obtained when the buffer is replaced with unknowns:(a)-0.2806V and (b)-0.2132V. Calculate the pH and the hydrogen ion activity of each unknown.(c)Assuming an uncertainty of 0.001V in the junction potential,what is range of hydrogen ion activities within which the true value might be expected to lie?
Chapter21: Potentiometry
Section: Chapter Questions
Problem 21.21QAP
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The cell
Ag|AgCl(sat'd)||H+(a=x)glass electrode
has a potential of -0.2094V when tne solution in the right hand compartment is a buffer of pH 4.006. The following potential are obtained when the buffer is replaced with unknowns:(a)-0.2806V and (b)-0.2132V. Calculate the pH and the hydrogen ion activity of each unknown.(c)Assuming an uncertainty of 0.001V in the junction potential,what is range of hydrogen ion activities within which the true value might be expected to lie?
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