`underline(P)Cl_(5)+H_(2)O to H_3PO_(4)+ 5HCl`

Options

A. If product is oxy acid with -ic suffix.
B. If product is oxy acid with -ous suffix
C. If product are two oxy acids one with -ic suffix and otherone with -ous suffix.
D. If product is not oxy acid, neither with -ic suffix nor with -ous suffix

Answer

To solve the question regarding the reaction of PCl₅ with H₂O to form H₃PO₄ and HCl, we will analyze the products formed and determine their classification as oxyacids.

### Step-by-Step Solution:

1. **Identify the Reactants and Products:**
- The reactants in the reaction are phosphorus pentachloride (PCl₅) and water (H₂O).
- The products formed are phosphoric acid (H₃PO₄) and hydrochloric acid (HCl).

2. **Determine the Nature of the Products:**
- Phosphoric acid (H₃PO₄) contains both oxygen and hydrogen, which qualifies it as an oxyacid.
- Hydrochloric acid (HCl) is a binary acid, not an oxyacid.

3. **Check the Structure of Phosphoric Acid:**
- The chemical formula H₃PO₄ indicates that it has three hydrogen atoms, one phosphorus atom, and four oxygen atoms.
- This confirms that H₃PO₄ is indeed an oxyacid.

4. **Determine the Oxidation State of Phosphorus:**
- In H₃PO₄, the oxidation state of phosphorus can be calculated. The oxidation state of hydrogen is +1, and that of oxygen is -2.
- The overall charge of the molecule is neutral (0). Thus, we can set up the equation:
\[ 3(+1) + x + 4(-2) = 0 \]
Simplifying this gives:
\[ 3 + x - 8 = 0 \implies x = +5 \]
- Therefore, the oxidation state of phosphorus in H₃PO₄ is +5.

5. **Classify the Oxyacid:**
- The oxidation state of phosphorus is +5, which is a higher oxidation state.
- Oxyacids with a higher oxidation state typically have the suffix "ic." Therefore, H₃PO₄ is called phosphoric acid.

6. **Conclusion:**
- Since H₃PO₄ is an oxyacid with the "ic" suffix, we can conclude that the product of the reaction is an oxyacid with an "ic" suffix.

### Final Answer:
The product is an oxyacid with an "ic" suffix (phosphoric acid).

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