The number of P-O-P and P-O-H bonds present respectively, in pyrophosphoric acid molecule is

Options

A. 1 ,2
B. 2 , 2
C. 1 , 4
D. 1 , 8

Explanation

To determine the number of P-O-P and P-O-H bonds in pyrophosphoric acid (H₄P₂O₇), we first need to understand its molecular structure.

### Step 1: Write the Molecular Formula
The molecular formula of pyrophosphoric acid is H₄P₂O₇. This indicates that there are 2 phosphorus (P) atoms, 4 hydrogen (H) atoms, and 7 oxygen (O) atoms.

### Step 2: Draw the Structure
The structure of pyrophosphoric acid can be represented as follows:

1. Start with two phosphorus atoms (P).
2. Each phosphorus atom is bonded to oxygen atoms.
3. The structure includes double bonds between phosphorus and oxygen (P=O) and single bonds (P-O).
4. The hydroxyl groups (OH) are also attached to the phosphorus atoms.

The general structure can be depicted as:
```
O
||
HO-P-O-P=O
| |
OH OH
|
H
```

### Step 3: Identify P-O-P Bonds
P-O-P bonds are formed between the two phosphorus atoms through an oxygen atom. In the structure of pyrophosphoric acid, there is **1 P-O-P bond**.

### Step 4: Identify P-O-H Bonds
P-O-H bonds are formed between phosphorus and hydroxyl groups (OH). In the structure, we can see that:
- The first phosphorus has one OH group attached.
- The second phosphorus has three OH groups attached.

Counting these, we find:
- 1 P-O-H bond from the first phosphorus.
- 3 P-O-H bonds from the second phosphorus.

Thus, the total number of P-O-H bonds is **4**.

### Conclusion
In pyrophosphoric acid (H₄P₂O₇):
- The number of P-O-P bonds is **1**.
- The number of P-O-H bonds is **4**.

### Final Answer
The number of P-O-P and P-O-H bonds present respectively in pyrophosphoric acid molecule is **1 and 4**.

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