Write chemical reactions to show that open structure of D-glucose contains the following:
Straight chain

Explanation

To demonstrate that the open chain structure of D-glucose contains a straight chain, we can write the following chemical reaction:

1. **Identify the structure of D-glucose**:
The open chain structure of D-glucose can be represented as:
\[ \text{CHO-CHOH-CHOH-CHOH-CHOH-CH2OH} \]
This structure has an aldehyde group (CHO) at one end and five hydroxyl (OH) groups along the chain.
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