A 25 ml solution of benzoic acid is titrated with a 0.02452 mol L-1 solution of sodium hydroxide. The endpoint of the titration is reached at 16.1 mL of sodium hydroxide solution. What is the concentration of the benzoic acid solution in mmol L-1? Do not include units in your answer. Answer to three significant figures.

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QUESTION 4
A 25 mL solution of benzoic acid is titrated with a 0.02452 mol L-1 solution of sodium hydroxide. The endpoint of the titration is reached at 16.1 mL of sodium
hydroxide solution.
What is the concentration of the benzoic acid solution in mmol L-1? Do not include units in your answer. Answer to three significant figures.
QUESTION 5
A 104 ml volume of an aqueous solution of chlorhexidine (0.03327 mol L-1) was extracted with 25 mL ethyl acetate. After extraction, the concentration of
chlorhexidine remaining in the aqueous layer was determined to be 0.02079 molL-1.
What is the value of K? (where K = CEtOAc / Cw)
Answer to one decimal place, see your Lab Manual for further information.
Transcribed Image Text:QUESTION 4 A 25 mL solution of benzoic acid is titrated with a 0.02452 mol L-1 solution of sodium hydroxide. The endpoint of the titration is reached at 16.1 mL of sodium hydroxide solution. What is the concentration of the benzoic acid solution in mmol L-1? Do not include units in your answer. Answer to three significant figures. QUESTION 5 A 104 ml volume of an aqueous solution of chlorhexidine (0.03327 mol L-1) was extracted with 25 mL ethyl acetate. After extraction, the concentration of chlorhexidine remaining in the aqueous layer was determined to be 0.02079 molL-1. What is the value of K? (where K = CEtOAc / Cw) Answer to one decimal place, see your Lab Manual for further information.
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