Write chemical reactions to show that open structure of D-glucose contains the following:
Five alcohol groups

Explanation

To demonstrate that the open structure of D-glucose contains five alcohol (–OH) groups, we can perform a chemical reaction that highlights these functional groups. The reaction involves the acetylation of D-glucose to form glucose pentacetate. Here’s a step-by-step solution:

### Step 1: Write the open-chain structure of D-glucose
D-glucose has an open-chain structure that contains an aldehyde group and five hydroxyl (–OH) groups. The open-chain structure can be represented as follows:

```
CHO
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