### Question: When the difference in pH across the membrane of a glass electrode at 25 °C is 3.75 pH units, how much voltage is generated by the pH gradient?### Options:- A. Not Enough Information to Determine- B. 222 mV- C. 180 mV- D. 273 mV- E. 0.222 mV- F. 0.273 mV- G. 3.75 mV### Explanation:This question is about calculating the voltage generated by a pH difference across a membrane. The relationship between pH difference and voltage can be determined using the Nernst equation for an ion-selective electrode. At 25 °C, the theoretical change in voltage per pH unit for a hydrogen ion concentration cell is approximately 59.16 mV. To find out the voltage generated by a pH difference of 3.75, you would calculate:\[ \text{Voltage (mV)} = 59.16 \times \text{pH difference} \]Substitute the given difference:\[ \text{Voltage (mV)} = 59.16 \times 3.75 \] Calculating this will give the correct answer.

At 25 C, the voltage generated by pH electrode is 59.16 mV for every pH unit change across the…

When the difference in pH across the membrane of a glass electrode at 25 °C is 3.75 pH units, how much voltage is generated by the gradient? A. Not Enough Information to Determine B. 222 mV O C. 180 mV OD. 273 mV E. 0.222 mV F. 0.273 mV O G. 3.75 mV

When the difference in pH across the membrane of a glass electrode at 25 °C is 3.75 pH units, how much voltage is generated by the gradient? A. Not Enough Information to Determine B. 222 mV O C. 180 mV OD. 273 mV E. 0.222 mV F. 0.273 mV O G. 3.75 mV

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

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