The number of Pi bonds in one molecule of “Aspartame” is ________

Explanation

To determine the number of pi bonds in one molecule of aspartame, we can follow these steps:

### Step 1: Understand the Structure of Aspartame
Aspartame is a dipeptide methyl ester, which consists of two amino acids (aspartic acid and phenylalanine) linked by a peptide bond. The molecular formula is C14H18N2O5.

### Step 2: Draw the Molecular Structure
To find the number of pi bonds, we need to visualize or draw the structure of aspartame. The key functional groups to consider are:
- The carbonyl groups (C=O)
- The aromatic ring (which contains double bonds)

### Step 3: Identify the Bonds
1. **Carbonyl Groups**: Each carbonyl group (C=O) contains one pi bond. Aspartame has two carbonyl groups.
2. **Aromatic Ring**: The benzene ring in aspartame has three double bonds, contributing three pi bonds.

### Step 4: Count the Pi Bonds
Now, we can count the total number of pi bonds:
- From the carbonyl groups: 2 pi bonds (one from each C=O)
- From the aromatic ring: 3 pi bonds (one from each C=C in the ring)

### Step 5: Calculate the Total
Adding these together gives:
- Total pi bonds = 2 (from carbonyls) + 3 (from the aromatic ring) = 5 pi bonds.

### Conclusion
Thus, the total number of pi bonds in one molecule of aspartame is **5**.

---