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Questions and Answers
What is the main purpose of the glass electrode in potentiometric titration?
What is the main purpose of the glass electrode in potentiometric titration?
- To measure temperature changes
- To measure the conductivity of the solution
- To measure the concentration of metal ions
- To measure pH (H+ concentration) (correct)
What is the equation that describes the voltage change of the ideal pH electrode?
What is the equation that describes the voltage change of the ideal pH electrode?
- $\Delta V = 75 \, \text{mV} \times \Delta \text{pH}$
- $\Delta V = 50 \, \text{mV} \times \Delta \text{pH}$
- $\Delta V = 59.16 \, \text{mV} \times \Delta \text{pH}$ (correct)
- $\Delta V = 25 \, \text{mV} \times \Delta \text{pH}$
What is the function of the Ag/AgCl reference electrodes in the combined glass electrode?
What is the function of the Ag/AgCl reference electrodes in the combined glass electrode?
- To measure the temperature of the solution
- To measure the potential across the glass membrane (correct)
- To measure the concentration of chloride ions
- To measure the concentration of silver ions
What does the Nernst-like equation describe?
What does the Nernst-like equation describe?
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What happens in the ion-exchange equilibrium on the surfaces of a glass membrane?
What happens in the ion-exchange equilibrium on the surfaces of a glass membrane?
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