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Case Study: The purpose of this case study is to decipher properties of acid based chemistry and how they adhere to LeChatelier's Principle.
YZ, a 55 yr old male was up at 5 am. He sufferes from Keratoconjunctivitis sicca and used RESTASIS daily. He had not put in his contacts for the day and grabbed his VOLSOL HC optic drops and put those in accidentially. He was in extreme pain and taken to the ER. The ER flushed his eyes with a saline drip for an hour. He was released and recommended to use COLLYRIUM for fresh eyes for discomfort. YZ read the labels on all of these products and was shocked to see acid as one of the ingredients in the drops recemmended by the ER. He calls the pharmacy to inquire about this. You are the pharmacist and given the call.
1.) What are the primary uses of the 3 products mentioned?
2.) What are the ACTIVE ingredients?
3.) Why did the acid from the VOLSOL HC drops hurt his eyes but not the acid in the COLLYRIUM for fresh eyes?
4.) Explain the purpose of the acid in EACH of the products.
A 15.0--mL unknown sample of aqueous acetic acid, CH3COOH(aq), was titrated using 0.800 M NaOH. If the titration endpoint was found to be 20.0 mL.
which reagent will be in excess? What will the concentration of the of the excess be?
Our quality control department is being moved to a different location and will not be able to handle any projects for a few weeks.
A reaction is followed and found to have a rate constant of 3.36 x 10^4 M-1S-1 at 344 K and a rate constant of 7.69 M-1s-1 at 219K. Determine the activation energy for this reaction"
The peak absorbance of the first chromatographic peak at 300nm was 0.020 and at 350nm 0.030. What is the main component of the first eluting peak and what percentage of the total absorbance at 300nm is due to this component?(assuming the light pat..
What types of intermolecular forces would you expect to exist among molecules of 1-butanol?
A urine sample was found to have a pH of 5.83. What would be the ratio of the unprotonated form, A, to the protonated form, HA, for uric acid in this urine sample?
What is ?, the electromotive efficiency to three significant figures?? Open the hint panel below for the definition of electromotive efficiency. (d) What is the pH of an unknown that gives a reading of 19.6 mV with this electrode at 30°C?
A sample of oxygen gas is collected over water at 25 degrees C. and a total pressure of 654 torr. The volume of gas collected is 500 mL. What mass of oxygen is collected? The vapor pressure of water is 25 degrees C at 23.8 torr.
The vapor pressure of pure water at 70°C is 240. mm Hg. What is the vapor pressure depression of a solution of 150. g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 215 g of water?
A certain quantity of a gas occupies 61.3 mL at 68 ?C. If the pressure remains constant, what would be the volume of the gas at 128 ?C?
Show the reaction energy diagram of two competing reactions, A & B and A & C, for which the kinetic product (C) is different from the thermodynamic product (B). Both reactions follow a one-step mechanism.
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