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[유기화학실험] Determination of acid and salt concentration by titration2

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    [유기화학실험] Determination of acid and salt concentration by titration2에 대한 자료입니다.
    목차
    Introduction
    Acid-base titrationnitric acid(HNO3)
    Analysis
    2. Determination of chloride by the fajans method
    본문내용
    At the equivalence point:mole of H+ = mole of OH-(Molarity of NaOH)*(Volume of NaOH used)=(Molarity of unknown)*(Volume of unknown)
    PH = 7 at equivalent point


    ① Add 5 drops of the indicator solution(BTB) to the unknown solution.

    ② Rinse the buret at least 3 times with a few mL of the 0.1M NaOH standard solution .

    ③ Fill the buret with the 0.1M NaOH solution and be sure to eliminate all bubles in the buret before continuing.


    ④ Titrate the unknown solution with 0.1M NaOH solution until the first permanent appearance of the tint blue color of the indicator(BTB). Read the buret volume to 0.01 mL

    ⑤ Repeat steps 1-4 two more times for a total of three titrations.

    ⑥ Calculate the average molarity of acid(yM) in unknown solution from these three titrations and the % relative standard deviation.

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