You have 150 mL of 0.25 M n-propylamine and you shake this in a mixture of 90 mL of water and 50 mL of an organic solvent and let it achieve equilibrium. You removed the water layer and titrated it using 0.30 M HCl, where end point of the titration was achieved at around 42.5 mL. Calculate for the partition coefficient of n-propylamine and describe the affinity of the compound based on the value you obtain.

While creating the E3 reaction mixture, a student obtains the following data. Calculate the initial thiocyanate ion concentration, [SCN]o, in the reaction mixture in millimolar (mM. Give your answer to three decimal places. Fe(NO3)3 NaSCN 0.10 MHNO3 2.042 x 10-3 M 1.98 × 10-3M initial buret reading (mL) 0.02 0.03 0.05 final buret reading (mL) 5.09 2.33 2.93 Your Answer: Answer

An experiment was performed in a similar manner as Experiment 4 (The Hydrolysis of t-Butyl Chloride). The following data was obtained: Total Time (s) Volume NaOH Titrant used (mL) 46 2.01 91 3.97 131 5.98 175 8.03 220 10.00 266 11.99 311 14.01 357 15.97 401 17.98 450 20.02 Final Volume NaOH to fully react sample: 85.01 mL Assume the proposed reaction mechanism in the experimental procedure is correct. Based on the above measurements, how many minutes would it take for the solution to reach 81.0% completion? Round your final answer to two decimal places.

1. After 3 hours, Ibuprofen is at 100mg 2. m(t)=400e^−0.462t, K=0.462 Please answer question 5.