5. Write the equation for assay of thiopental sodium_substance. Give the value of stoichiometric coefficient, formulas for the calculation of titre and percentage.
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- Refering to the image attached (Winkler method), what is the function of sodium thiosulphate and why do we need to add in the solution until it turns into pale yellow colour?Why is hydrochloric acid added to the precipitated copper metal near the end of the procedure?Why is it not necessary to know the exact volume of deionized water added when preparing the samples for titration?
- What is the chloride test of boiler water used for?A student rushed through this experiment, but noted some procedural errors in their lab notebook. If the following observations were listed in the lab notebook, how would they affected the calculate sodium hypochlorite percentage? Would the calculated percentage be too high, too low, or unchanged by their procedural error? A student forced the remaining liquid in the pipet out with the pipet pump. A student had an air bubble in the buret tip that remained there during the entire titration. A student had an air bubble in the buret tip that came out during the titration.What are the two reasons why sulfuric acid is added to a filtered solution produced after the aluminum has reacted with the potassium hydroxide?
- Use the Rittmann and McCarty tables to construct a balanced reaction for acetate oxidation with: (a) oxygen as an electron acceptor, and (b) with nitrate as an electron acceptor Please show stepsHow do you differentiate the method of standardizing the NaOH solution from that of HCl solution?In this activity, you will develop an experimental procedure to solve a problem. Consider the followingscenario:You are the manager of a chemical stockroom, and find a bottle containing approximately one liter of aclear and colorless solution of unknown identity and concentration. Your only clue to its identity is thatit was found between bottles of silver fluoride and sodium fluoride, so it is likely an aqueous solution ofone of those two compounds. You will need to develop a procedure to determine the following:a) The identity of the unknown solutionb) The concentration of the unknown solutionWrite out a precise procedure, which includes all glassware, reagents, and steps. You will also need towrite the calculations that you would need to determine the concentration of the solution. Assume thatyou have access to any reagent you might need