To convert glucose to saccharic acid the reagent used is

Options

A. bromine water
B. Fehling's solution
C. Nitric acid
D. Alkaline solution of Iodine

Answer

To convert glucose to saccharic acid, the reagent used is nitric acid. Here’s a step-by-step explanation of the process:

### Step 1: Understand the Structures
- **Glucose Structure**: Glucose is a six-carbon sugar (hexose) with the molecular formula C₆H₁₂O₆. It contains an aldehyde group (-CHO) at one end and multiple hydroxyl groups (-OH) attached to its carbon skeleton.
- **Saccharic Acid Structure**: Saccharic acid (also known as glucaric acid) is a dicarboxylic acid derived from glucose, where both the aldehyde group and the primary alcohol group are oxidized to carboxylic acid groups (-COOH).

### Step 2: Identify the Reagents
- **Mild Oxidizing Agents**: Reagents like bromine water and Fehling's solution can oxidize the aldehyde group of glucose to form gluconic acid but will not oxidize the alcohol group.
- **Strong Oxidizing Agents**: Nitric acid is a strong oxidizing agent that can oxidize both the aldehyde group and the primary alcohol group of glucose to carboxylic acids.

### Step 3: Reaction with Nitric Acid
- When glucose reacts with nitric acid, both the aldehyde group and the primary alcohol group are oxidized.
- The reaction can be represented as:
- Glucose (C₆H₁₂O₆) + HNO₃ → Saccharic Acid (C₆H₈O₆) + other products.

### Step 4: Conclusion
- The reagent used to convert glucose to saccharic acid is **nitric acid**.

### Summary
- **Glucose** is oxidized by **nitric acid** to form **saccharic acid**.