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write a lab report with reference on aspirin titration (1500 words)
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- Assume you have 0.1 M NaOH Trial 1: 22.5 mL NaOH Trial 2: 25.6 mL NaOH Trial 3: 24.4 mL NaOHTable of chemicals and reagents with their physicochemical properties (name, molecular formula, molecular weight, pKa, melting point, boiling point, etc.) Write a short outline or a flow diagram of the procedure List and safety issues Read and understand the MSDS information for each chemical used in this practical Experimental procedure Please do not scratch the clear sides of the UV cuvettes as this will invalidate your results. Part 1: Preparation of a calibration curve A calibration curve should be constructed using at least five concentrations of the pure paracetamol standard supplied in the range 3-15 ug/mL as follows: Weigh about 150 mg of paracetamol accurately and transfer to a 200 mL volumetric flask. Add 50 mL of o.1 M NaOH and dilute to about 100 mL with deionised water (DI). Shake and make up to volume with DI water. Dilute 10 mL of the resulting solution to 100 mL (volumetric flask) with DI water (= stock solution). Prepare standard solutions containing 3, 6, 9, 12 and 15…Show pertinent solution and box the final answer.
- Which of the following are first aid measures for glacial acetic acid? Select one: a. If swallowed, rinse mouth with water (unless the affected person is unconscious). Consult a physician. b. If in contact with the eyes, flush eyes with water for 15 minutes. Consult a physician and continue to wash eyes with water during transport to the hospital. c. If in contact with the skin, remove contaminated clothing and wash affected area with soap and water for at least 15 minutes. Consult a physician. d. All options are correct. e. If inhaled, move the affected person to fresh air and give artificial respiration if they are not breathing. Consult a physician.What volume of aztreonam (50 mg/ml) must be added to 500 ml of Mueller-Hinton broth to yield a solution supplemented with 75 µg/ml of aztreonam?A sample is analyzed for Pb. Is the ppm in a dry sample greater than, equal or less than to the ppm, in wet sample?
- In carrying out the first standardization in this experiment, a student used 0.5169 g of potassium hydrogen phthalate (KHP) and 24.17 mL of a NaOH solution are needed to reach the equivalence point. What is the concentration (in mol/L) of the student's NaOH solution? Include only the numerical answer (no units). be careful with significant digitQuestion - Dialysis is a common technique used to change the buffer a protein sample is found in. It is performed using special bags that contain micro-pores that are bigger than the size of the protein. True or False ?A) What is the concentration of benzene (in ppm) in the original solution? B) What is the concentration of hexane (in ppb) in the original solution?
