Your Boss Has Asked You To Prepare A Solution Of An Acetate Buffer Unfortunately You Only Have A Bottle Of 0 295 M Of 1 (44.54 KiB) Viewed 37 times
Your Boss Has Asked You To Prepare A Solution Of An Acetate Buffer Unfortunately You Only Have A Bottle Of 0 295 M Of 2 (40.3 KiB) Viewed 37 times
Your boss has asked you to prepare a solution of an acetate buffer. Unfortunately, you only have a bottle of 0.295 M of acetic acid, CH3COOH, and a bottle of 0.200 M of NaOH. Note that the pK, of CH3COOH is 4.74. a) How many moles of CH3COOH are in 100.0 mL of a 0.295 M solution of acetic acid? CH3COOH : mol b) How many moles of NaOH must you add to the 100.0 mL 0.295 M acetic acid to obtain a buffer solution with a pH of 4.80 ? NaOH : mol c) What volume of 0.200 M NaOH must you add, in mL, to reach that pH ? V: mL
If you have a 53.0 mL solution of 0.280 M benzoic acid, C6H5COOH, and it is being titrated with 0.250 M NaOH, answer each of the questions below. Note that the Ką value of benzoic acid is 6.40 x 10-5. a) How many moles of benzoic acid are present in the original solution? C6H5COOH : mol b) What is the volume of the equivalence point, Veq, for the titration in litres, L? Veq : L c) What is the pH at the equivalence point? pH :
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