7. A student performed an acid-base titration in the lab and recorded the results as shown below. Look very carefully at the results and answer the questions which follow. 演定結果 HCI→2Nacl+ Co + HO. 演定 終結演定管讀數(cm) 開始演定管讀數(cm) 所需演定劑的體積 (cm) BC 5.40 21.40 15.40 1. 2. 36.7 34.40 27.40 12.00 12.30 12.00 (1.5 1200 t1200 tll5 所間演定劑的不均體積。 標 0.025/M 25 2010 (a) Why do we perform acid-base titrations in our labs? (b) In the titration performed by the student, what was the net ionic equation for the chemical reaction occurring? (c) List all the wrong things that the student did when writing the report on his titration experiment.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.