Of the following acids, the one that is strongest is

Options

A. `HBrO_(4)`
B. `HOCl`
C. `HNO_(2)`
D. `H_(3)PO_(3)`

Explanation

To determine which of the given acids is the strongest, we need to analyze the oxidation states of the central atoms in each acid. The strength of an acid is often correlated with the oxidation state of its central atom; the higher the oxidation state, the stronger the acid.

### Step-by-Step Solution:

1. **Identify the Acids**: We need to analyze the following acids: HBrO4, HClO, HNO2, and H3PO3.

2. **Calculate the Oxidation State of the Central Atom in Each Acid**:
- **For HBrO4**:
- Let the oxidation state of Br be \( X \).
- The equation is: \( 1 + X + 4(-2) = 0 \) (where -2 is the oxidation state of each oxygen).
- Simplifying: \( 1 + X - 8 = 0 \) → \( X = +7 \).

- **For HClO**:
- Let the oxidation state of Cl be \( Y \).
- The equation is: \( 1 + Y - 2 = 0 \).
- Simplifying: \( 1 + Y - 2 = 0 \) → \( Y = +1 \).

- **For HNO2**:
- Let the oxidation state of N be \( Z \).
- The equation is: \( Z + 2(-2) + 1 = 0 \).
- Simplifying: \( Z - 4 + 1 = 0 \) → \( Z = +3 \).

- **For H3PO3**:
- Let the oxidation state of P be \( W \).
- The equation is: \( W + 3(-2) + 3(1) = 0 \).
- Simplifying: \( W - 6 + 3 = 0 \) → \( W = +3 \).

3. **Compare the Oxidation States**:
- HBrO4: +7
- HClO: +1
- HNO2: +3
- H3PO3: +3

4. **Determine the Strongest Acid**: The acid with the highest oxidation state is HBrO4, which has an oxidation state of +7. Therefore, HBrO4 is the strongest acid among the given options.

### Conclusion:
The strongest acid among the given options is **HBrO4**.

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