[유기화학실험] Determination of acid and salt concentration by titration2

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레포트 > 공학계열
2010.04.16
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[유기화학실험] Determination of acid and salt concentration by titration2에 대한 자료입니다.

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.

#the #of #unknown #solution #by #and #NaOH #to #is

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