`wedge_(m)^(@)` for `NaCl,HCl`, and `NaAc` are`126.4, 425.9,` and `91.0 S cm^(2) mol^(-1)` , respectively . Calculate `wedge ^(@)` for `HAc.`

Explanation

To calculate the limiting molar conductivity (Λ°) for acetic acid (HAc) using the given molar conductivities of NaCl, HCl, and NaAc, we can use the following approach:

### Step-by-Step Solution:

1. **Identify the given values**:
- Molar conductivity of NaCl (Λ° NaCl) = 126.4 S cm² mol⁻¹
- Molar conductivity of HCl (Λ° HCl) = 425.9 S cm² mol⁻¹
- Molar conductivity of NaAc (Λ° NaAc) = 91.0 S cm² mol⁻¹
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