Loss of electrons is oxidation. The process at anode is

Options

A. Oxidation
B. Reduction
C. Both
D. None.

Explanation

To solve the question regarding the process at the anode in an electrochemical cell where loss of electrons is defined as oxidation, we can follow these steps:

### Step 1: Understand the Definitions
- **Oxidation** is defined as the loss of electrons.
- **Reduction** is defined as the gain of electrons.
- In an electrochemical cell, the anode is where oxidation occurs, and the cathode is where reduction occurs.

**Hint:** Remember the mnemonic "An Ox and a Red Cat" to associate oxidation with the anode and reduction with the cathode.

### Step 2: Identify the Components of the Electrochemical Cell
- In the given scenario, we have an electrochemical cell with solutions of CuSO4 and AgCl.
- The species involved are Cu (copper) and Ag (silver).

**Hint:** Identify the species in the cell and their respective oxidation states to understand the processes occurring.

### Step 3: Analyze the Reduction Potentials
- The reduction potential of Ag is higher than that of Cu. This means Ag will be reduced (gain electrons) and Cu will be oxidized (lose electrons).
- For Ag:
\[ \text{Ag}^+ + e^- \rightarrow \text{Ag (s)} \]
- For Cu:
\[ \text{Cu (s)} \rightarrow \text{Cu}^{2+} + 2e^- \]

**Hint:** Compare the standard reduction potentials to determine which species will undergo reduction and which will undergo oxidation.

### Step 4: Determine the Oxidation Process
- Since Cu is losing electrons (going from Cu to Cu²⁺), it is undergoing oxidation.
- The oxidation state of copper changes from 0 (in elemental form) to +2 (in Cu²⁺), indicating an increase in oxidation state.

**Hint:** Look for changes in oxidation states to confirm which species is oxidized.

### Step 5: Conclude the Process at the Anode
- Since oxidation occurs at the anode, and we have determined that copper is being oxidized, we can conclude that:
- The process at the anode is the oxidation of copper.

**Final Answer:** The process at the anode is oxidation.