What is the percent dissociation of acetic acid in vinegar

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Problem- Vinegar is 5.0 % solution by weight of acetic acid in water. Given that the pH for acetic acid is 2.41 the Ka= 1.8E-5 and assuming the density of vinegar to be 1.00g/cm^3. What is the percent dissociation of acetic acid in vinegar?

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