How can the following conversions be brought about :
Glycerol to formic acid

Explanation

To convert glycerol to formic acid, we can follow these steps:

### Step 1: Formation of Glycerol Mono-Oxalate
1. **Starting Material**: Glycerol (C3H8O3) is our starting compound.
2. **Reagent**: We will react glycerol with oxalic acid (C2H2O4).
3. **Process**: Heat the mixture at 110°C. During this heating, water (H2O) is removed from the reaction mixture.
4. **Product**: This reaction results in the formation of glycerol mono-oxalate, which can be represented as:
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