In the given reaction:
`P_(2)O_(5)+H_(2)SO_(4) rarr`
Oxyacid formed is?

Options

A. `H_(3)PO_(2)`
B. `H_(3)PO_(4)`
C. `H_(2)SO_(4)`
D. `HPO_(3)`

Answer

To solve the question regarding the reaction of phosphorus pentoxide (P₂O₅) with sulfuric acid (H₂SO₄) and to identify the oxyacid formed, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in the given reaction are phosphorus pentoxide (P₂O₅) and sulfuric acid (H₂SO₄).

### Step 2: Write the Reaction
The reaction can be represented as:
\[ \text{P}_2\text{O}_5 + \text{H}_2\text{SO}_4 \rightarrow \text{?} \]

### Step 3: Determine the Product
When phosphorus pentoxide reacts with sulfuric acid, it forms metaphosphoric acid (HPO₃) and sulfur trioxide (SO₃) as a byproduct. The balanced reaction can be represented as:
\[ \text{P}_2\text{O}_5 + \text{H}_2\text{SO}_4 \rightarrow 2 \text{HPO}_3 + \text{SO}_3 \]

### Step 4: Identify the Oxyacid
The product formed in this reaction, which is an oxyacid, is metaphosphoric acid (HPO₃). Oxyacids are defined as acids that contain hydrogen, oxygen, and another element (in this case, phosphorus).

### Step 5: Conclusion
Thus, the oxyacid formed in the reaction between phosphorus pentoxide and sulfuric acid is:
\[ \text{HPO}_3 \]

### Final Answer
The oxyacid formed is HPO₃ (metaphosphoric acid).

---