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A 30.00mL sample of Heinz vinegar ( 5% acetic acid, CH3CO2H ) required 38.27mL of NaOH solution to reach the phenolphthalein endpoint. Calculate the molarity

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A 30.00mL sample of Heinz vinegar ( 5% acetic acid, CH3CO2H ) required 38.27mL of NaOH solution to reach the phenolphthalein endpoint. Calculate the molarity of the NaOH solution. a. 0.6532M b. 0.1306M c. 0.131M d. 0.653M

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