Dissolution of glucose is

Options

A. endothermic reaction
B. exothermic reaction
C. redox reaction
D. displacement reaction

Explanation

To solve the question regarding the dissolution of glucose, we will follow these steps:

### Step-by-Step Solution

1. **Understanding Dissolution**:
- Dissolution refers to the process where a solute (in this case, glucose) mixes with a solvent (like water) to form a solution. During this process, the solute particles disperse uniformly throughout the solvent.

**Hint**: Remember that dissolution involves mixing a solute with a solvent.

2. **Chemical Composition of Glucose**:
- Glucose has the chemical formula C₆H₁₂O₆. It is a simple sugar that is crucial for energy production in living organisms.

**Hint**: Familiarize yourself with the molecular formula of glucose.

3. **Glucose Metabolism**:
- In biological systems, glucose undergoes a metabolic process where it reacts with oxygen (O₂) to produce carbon dioxide (CO₂), water (H₂O), and energy (ATP). The overall reaction can be summarized as:
\[ C₆H₁₂O₆ + 6O₂ \rightarrow 6CO₂ + 6H₂O + \text{energy (ATP)} \]

**Hint**: Understand the role of glucose in cellular respiration.

4. **Identifying the Type of Reaction**:
- To classify the reaction, we need to analyze the oxidation states of the elements involved:
- In glucose (C₆H₁₂O₆), the oxidation state of carbon (C) is 0.
- In carbon dioxide (CO₂), the oxidation state of carbon is +4.
- Oxygen in O₂ has an oxidation state of 0 and in H₂O and CO₂, it has an oxidation state of -2.

**Hint**: Determine the oxidation states to identify oxidation and reduction.

5. **Calculating Oxidation States**:
- For glucose:
- Carbon: Let the oxidation state be \( x \).
- The equation for glucose becomes:
\[ 6x + 12 - 12 = 0 \implies x = 0 \]
- For carbon dioxide:
\[ x - 4 = 0 \implies x = +4 \]

**Hint**: Set up equations based on the oxidation states to find the values.

6. **Identifying Oxidizing and Reducing Agents**:
- In this reaction:
- Oxygen is reduced (its oxidation state decreases from 0 to -2).
- Carbon is oxidized (its oxidation state increases from 0 to +4).
- Therefore, oxygen acts as the oxidizing agent, and glucose acts as the reducing agent.

**Hint**: Recognize the roles of oxidizing and reducing agents in a redox reaction.

7. **Conclusion**:
- Since there is a transfer of electrons (oxidation of carbon and reduction of oxygen), the dissolution of glucose involves both oxidation and reduction processes, making it a redox reaction.

**Hint**: Conclude by summarizing the findings about the reaction type.

### Final Answer
The dissolution of glucose is classified as a **redox reaction**.