The reagent which may be used to distinguish between cane sugar and glucose solution is

Options

A. Molisch’s reagent
B. Iodine solution
C. Baeyer’s reagent
D. Fehling’s solution

Answer

To distinguish between cane sugar (sucrose) and glucose, we need to identify a reagent that reacts differently with these two sugars. Here’s a step-by-step solution:

### Step 1: Identify the Structures of the Sugars
- **Glucose** is an aldehyde sugar (an aldose) and has the structure that includes an aldehyde group (-CHO).
- **Cane Sugar (Sucrose)** is a non-reducing sugar and does not have a free aldehyde or ketone group.

### Step 2: Choose an Appropriate Reagent
- A suitable reagent to distinguish between these two sugars is **Fehling's solution** or **Benedict's solution**. Both contain copper ions that can react with aldehyde groups.

### Step 3: Reaction with Glucose
- When glucose is treated with Fehling's solution, the aldehyde group reacts with the copper ions. This reaction reduces the copper (II) ions to copper (I) oxide (Cu2O), which precipitates as a red solid.
- The reaction can be summarized as:
\[ \text{Glucose} + \text{Cu}^{2+} \rightarrow \text{Gluconic Acid} + \text{Cu}_2\text{O (red ppt)} + \text{H}_2\text{O} \]

### Step 4: Reaction with Cane Sugar
- Cane sugar (sucrose) does not have a free aldehyde group and therefore does not react with Fehling's solution. No color change or precipitate will be observed.

### Step 5: Conclusion
- The reagent that can be used to distinguish between cane sugar and glucose is **Fehling's solution** (or Benedict's solution), as it will produce a red precipitate with glucose but not with cane sugar.

### Final Answer
The reagent which may be used to distinguish between cane sugar and glucose solution is **Fehling's solution**.

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