A vinegar solution of unknown concentration was prepared by diluting 10.00 mL of vinegar to a total volume of 50.00 mL with deionized water. A 25.00-mL sample of the diluted vinegar solution required 20.24 mL of 0.1073 M NaOH to reach the equivalence point in the titration. Calculate the concentration of acetic acid, CH3COOH, (in M) in the original vinegar solution (i. e., before dilution).