A series of titrations was carried out to find the concentration of the ethanoic acid in...

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A series of titrations was carried out to find the concentration of the ethanoic acid in white vinegar. CH3COOH(aq) + NaOH(aq) → CH3COONa (aq) + H₂O(l) In each titration, a student placed 25.0 cm³ samples of the vinegar in a conical flask. She then added a few drops of the indicator phenol red. She titrated the vinegar against a solution of sodium hydroxide with concentration 0.100 mol/dm³. She recorded the results in the table below. start reading / cm³ final reading / cm³ volume used / cm³ titration 1 0.0 23.5 titration 2 23.5 46.9 titration 3 0.1 22.8 titration 4 22.8 46.1 Name the piece of apparatus that should be used to measure the 25.0 cm³ samples of the vinegar into the conical flask. Name the piece of apparatus that is used for the sodium hydroxide solution. Complete the table to show the volume used in each titration. Calculate the mean volume of sodium hydroxide, leaving out any anomalous results. Find the concentration of the ethanoic acid in mol/dm³. Give your answer to 3 significant figures. Find the concentration of the ethanoic acid in g/dm³. Give your answer to 3 significant figures. Explain why this titration may have been difficult to do with brown vinegar. A series of titrations was carried out to find the concentration of the ethanoic acid in white vinegar. CH3COOH(aq) + NaOH(aq) → CH3COONa (aq) + H₂O(l) In each titration, a student placed 25.0 cm³ samples of the vinegar in a conical flask. She then added a few drops of the indicator phenol red. She titrated the vinegar against a solution of sodium hydroxide with concentration 0.100 mol/dm³. She recorded the results in the table below. start reading / cm³ final reading / cm³ volume used / cm³ titration 1 0.0 23.5 titration 2 23.5 46.9 titration 3 0.1 22.8 titration 4 22.8 46.1 Name the piece of apparatus that should be used to measure the 25.0 cm³ samples of the vinegar into the conical flask. Name the piece of apparatus that is used for the sodium hydroxide solution. Complete the table to show the volume used in each titration. Calculate the mean volume of sodium hydroxide, leaving out any anomalous results. Find the concentration of the ethanoic acid in mol/dm³. Give your answer to 3 significant figures. Find the concentration of the ethanoic acid in g/dm³. Give your answer to 3 significant figures. Explain why this titration may have been difficult to do with brown vinegar.

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