1. (a) What is the purpose of titration in volumetric analysis, and briefly explain how is it carried out? (b) What is an indicator and why it is used in titrations? (c) What indicator will be used in this experiment and to which solution it is added?

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1. (a) What is the purpose of titration in volumetric analysis, and briefly explain how is it carried
out?
(b) What is an indicator and why it is used in titrations?
(c) What indicator will be used in this experiment and to which solution it is added?
(d) In this experiment which solution is filled into the burette? Why must the burette be rinsed
with the solution before it is filled for the experiment?
2. What is the purpose of the trial titration?
3. Explain the purpose of washing the inside wall of the flask with deionized water during accurate
titration. Would this washing affect the outcome of the titration? Explain.
4. In this experiment a 25.0-mL sample of vinegar is diluted to 100.0 mL; then, a 10.00-mL portion
of the dilute vinegar solution is placed in an Erlenmeyer flask and titrated with standardized
NaOH solution. If 19.40 mL of 0.1065 M NAOH solution is required to reach endpoint, what is the
concentration of acetic acid in diluted vinegar? Calculate the molar concentration of acetic acid in
the original (undiluted) vinegar.
Transcribed Image Text:1. (a) What is the purpose of titration in volumetric analysis, and briefly explain how is it carried out? (b) What is an indicator and why it is used in titrations? (c) What indicator will be used in this experiment and to which solution it is added? (d) In this experiment which solution is filled into the burette? Why must the burette be rinsed with the solution before it is filled for the experiment? 2. What is the purpose of the trial titration? 3. Explain the purpose of washing the inside wall of the flask with deionized water during accurate titration. Would this washing affect the outcome of the titration? Explain. 4. In this experiment a 25.0-mL sample of vinegar is diluted to 100.0 mL; then, a 10.00-mL portion of the dilute vinegar solution is placed in an Erlenmeyer flask and titrated with standardized NaOH solution. If 19.40 mL of 0.1065 M NAOH solution is required to reach endpoint, what is the concentration of acetic acid in diluted vinegar? Calculate the molar concentration of acetic acid in the original (undiluted) vinegar.
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