Write a reaction which shows that all the carbon atoms in glucose are in a straight chain.

Explanation

To demonstrate that all the carbon atoms in glucose are in a straight chain, we can use a reduction reaction involving glucose and a strong reducing agent. The reaction can be summarized as follows:

### Step-by-Step Solution:

1. **Identify the Structure of Glucose**:
Glucose (C6H12O6) has a molecular formula indicating it contains six carbon atoms. In its open-chain form, glucose is represented as:
\[
\text{CHO-CH2-CHOH-CHOH-CHOH-CH2OH}
...