how to write introduction on determination of acetic acid in different vineager
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AN ACID-BASE TITRATION Take the average NaOH mole of three trials. From this average mole value (of NaOH), obtain the moles of acetic acid (CH3COOH) in the dilute vinegar sample. (5 pts.) Solution hint: Use the mole-to-mole ratio in the reaction between sodium hydroxide and acetic acid (see the Eq.2 in your lab booklet) Calculate the mole of CH3COOH in the vinegar sample (Note: use dilution factor). (10 pts.) Calculate the molarity of acetic acid in the vinegar sample using the moles of CH3COOH and the volume of the vinegar sample used. (10 pts.) Calculate the mass of CH3COOH in the vinegar sample (Hint: nacetic acid=macetic acid/mW; mw(acetic acid)=60 g/mol) (5 pts.) Determine the total mass of the vinegar sample from the vinegar volume and the vinegar density. Assume that the vinegar density is 1.000 g/mL (= to the density of water). (5 pts.) Calculate the mass percent of acetic acid in the vinegar from the mass of CH3COOH and the mass of the vinegar. (