C. DURING THE REACTION l. Keep the volumetric flask sealed except when withdrawi

Question

C. DURING THE REACTION l. Keep the volumetric flask sealed except when withdrawing a sample. Place a thermometer beside the flask to determine "room temperature". To keep the reaction temperature rela- tively constant, leave the flask in the same place during the two-hour kinetic period. Temperature changes will result in poor, non-linear data 2. At approximately (+2 min) 10, 20, 50, 75 and 100 remove 10.0 mL samples with 35, minutes, a volumetric pipette, transferring each sample to an Erlenmeyer flask con ml. 1 of acetone. Record the time of sampling half emptied as the exact time when the pipette is into the acetone. After quenching, immediately to part D with these samples proceed 3. Take one 10 mL "infinity" sample early in the half an and add it to 10 ml. of WATER. Repeat with a reaction hou to sit for at least one hour second 10 mL Allow bo finity" samples from the before titrating. Cork Parafilm samples Average the result "infinity" samples. or the

Explanation / Answer

The infinity samples are prepare by dilution in water as water is used as the blank for the experiment. Prpanol changes the polarity of the solution and is thus no more a blank experiment. It comes under the solvent effect for the given experiment.

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