Nernst Equation and Galvanic Cells

This video tutorial by Jeremy Krug covers AP Chemistry Unit 9, Section 9, focusing on galvanic cells operating under non-standard conditions. It explains how ion concentrations and voltage change as reactions progress, using an ICE box for calculations. The Nernst equation is introduced to calculate cell potential under varying conditions, emphasizing the effects of temperature and concentration changes on voltage. The video concludes with practical examples and tips for understanding these concepts.

What assumption is typically made about the conditions under which galvanic cells operate?

• They operate with no reactants.

• They operate in a vacuum.

• They operate at standard conditions.

• They operate at high temperatures.

As a galvanic cell reaction progresses, what happens to the concentration of copper ions?

• It fluctuates randomly.

• It remains constant.

• It increases.

• It decreases.

What is the potential difference of a galvanic cell when it reaches equilibrium?

• It is negative.

• It is at its maximum.

• It is unpredictable.

• It is zero volts.

What tool is recommended for calculating changes in concentration in galvanic cells?

• A voltmeter

• A thermometer

• An ICE box

• A calculator

Which of the following is a constant in the Nernst equation?

• Universal gas constant (R)

• Concentration

• Pressure

• Temperature

How does increasing the temperature of a galvanic cell affect its voltage?

• It increases the voltage.

• It has no effect.

• It makes the voltage fluctuate.

• It decreases the voltage.

What happens to the cell potential if the concentration of products is increased?

• The cell potential decreases.

• The cell potential increases.

• The cell potential becomes negative.

• The cell potential remains the same.

What effect does decreasing the concentration of reactants have on the cell potential?

• It increases the cell potential.

• It has no effect.

• It makes the cell potential negative.

• It decreases the cell potential.

How can the potential difference of a galvanic cell be increased?

• By decreasing the concentration of reactants.

• By increasing the concentration of products.

• By increasing the temperature.

• By increasing the concentration of reactants.

What is the primary focus of the Nernst equation in galvanic cells?

• Determining equilibrium constants.

• Calculating cell potential under non-standard conditions.

• Calculating temperature changes.

• Measuring pressure changes.