A sample of vinegar of 50 ml and density of sample = 1.06 g/mL was diluted to 500 milliLitres. Titration of a 50 mL of this solution needed 42.5 mL of 0.0900 M sodium hydroxide NaOH to reach the end point. Determine the acid content of the vinegar as wt % CH3COOH, acetic acid