`underline(P_(4))O_(6)+6H _(2)O to 4H_(3)PO_(3)`

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 \( P_4O_6 + 6H_2O \rightarrow 4H_3PO_3 \), we will analyze the products formed and determine the correct classification of the resulting compound.

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactants are \( P_4O_6 \) (tetraphosphorus hexoxide) and \( H_2O \) (water).
- The product formed is \( H_3PO_3 \) (phosphorous acid).

2. **Determine the Type of Reaction**:
- This reaction involves the combination of a phosphorus oxide with water, which typically results in the formation of an acid. This is a synthesis reaction where two or more reactants combine to form a single product.

3. **Analyze the Product**:
- The product \( H_3PO_3 \) can be classified as an oxyacid because it contains hydrogen, oxygen, and phosphorus. Oxyacids are acids that contain oxygen along with hydrogen and another element.

4. **Identify the Naming Convention**:
- The anion corresponding to \( H_3PO_3 \) is \( H_2PO_3^- \), which is known as phosphite.
- According to the naming conventions for oxyacids, if the anion ends in "ite", the acid name will end in "ous". Therefore, \( H_3PO_3 \) is named phosphorous acid.

5. **Select the Correct Option**:
- Based on the analysis, the product \( H_3PO_3 \) is an oxyacid with the suffix "ous". Thus, the correct option is that the product is an oxyacid with the "ous" suffix.

### Final Answer:
The correct option is: **The product is an oxyacid with the "ous" suffix**.