AP® Chemistry Multiple Choice Practice Problems

TL;DR

The standard cell potential in a galvanic cell can be calculated using the equation E(cell) = E(cathode) - E(anode).

Transcript

In this video we're going to work through a  bunch of sample multiple choice questions for   the AP chemistry test. Now before you go through  this whole video, I really recommend you check out   my website. Here you can download these problems  first and do kind of a mini test. It only takes 30   minutes and then you can come back here for the  a... Read More

Key Insights

• ❓ The standard cell potential of a galvanic cell can be determined using the difference in reduction potentials for the cathode and anode.
• ❓ In a galvanic cell, reduction occurs at the cathode and oxidation occurs at the anode.
• 🉐 Reduction potential is a measure of the tendency of a species to gain electrons and be reduced.
• ⚡ The reduction potential of a species is measured relative to a standard hydrogen electrode (SHE), assigned a reduction potential of 0 volts.
• 🥵 The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of one gram of the substance by one degree celsius.

Questions & Answers

Q: How is the standard cell potential in a galvanic cell calculated?

The standard cell potential is calculated using the equation E(cell) = E(cathode) - E(anode), where E(cathode) is the reduction potential of the cathode and E(anode) is the reduction potential of the anode.

Q: What does it mean for a species to be reduced?

When a species is reduced, it gains electrons. In a galvanic cell, reduction occurs at the cathode.

Q: What does it mean for a species to be oxidized?

When a species is oxidized, it loses electrons. In a galvanic cell, oxidation occurs at the anode.

Q: Can you explain the concept of reduction potential?

Reduction potential is a measure of the tendency of a species to gain electrons and be reduced. It is measured relative to a standard hydrogen electrode (SHE), which is assigned a reduction potential of 0 volts. The more positive the reduction potential, the greater the tendency for reduction to occur.

Summary & Key Takeaways

• The standard cell potential in a galvanic cell is the difference between the reduction potentials of the cathode and the anode.

• Reduction occurs at the cathode, where a species gains electrons and is reduced.

• Oxidation occurs at the anode, where a species loses electrons and is oxidized.