Posted by **Kirti** on Saturday, March 10, 2012 at 9:14pm.

The measurement of pH using a glass electrode obeys the Nernst equation. The typical response of a pH meter at 25.00 degrees C is given by the equation:

E(measured)= E(ref) +.591pH

where ref contains the potential of the reference electrode and all other potentials that arise in the cell that are not related to the hydrogen ion concentration. Assume that E ref = 0.250 V and that E meas = 0.480V

What is the uncertainty in the values of pH and [H+] if the uncertainty in the measured potential is 1 mV (0.001 V)? pH=+/- ___ H+ = +/-_____

To what accuracy must the potential be measured for the uncertainty in pH to be 0.02 pH units?

___Potential

Please! help me its so confusing i m not sure how to do this at all. i tried the delta G equations but it doesnt make sense

## Answer this Question

## Related Questions

- chemistry - When an ion-selective electrode for X was immersed in 0.0210 M XCl, ...
- Chemistry PLEASE!! - how do i calculate a concentration ratio of oxidised to ...
- Chemistry...please help - A galvanic cell is based on the following half-...
- Chemistry - A student places a zinc electrode in a 0.80 M Zn2+(aq) solution ...
- Chemistry - A student places a zinc electrode in a 0.80 M Zn2+(aq) solution ...
- Chemistry - Using your experimental data, calculate E0cell. Standard voltaic ...
- Chemistry - 1) Using a table of standard electrode potentials (such as the one ...
- Chem - When an ion-selective electrode for sulfate was immersed in 0.0300 M ...
- Chemistry - The cell Pt|H2(1 bar)|HCl(m)|AgCl(s)|Ag has an Stadard elctrode ...
- trig 30 - Please help I need to solve the following question for x, where 0<x...