What are possible sources of error that may occur when performing a cyclic voltammetry experiment? How can they be improved? What are alternative methods of analysis?
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What are possible sources of error that may occur when performing a cyclic voltammetry experiment? How can they be improved? What are alternative methods of analysis?
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- 1. What is the normality of an oxidizing agent of a solution of potassium dichromate (K2Cr2O7) containing 8.906 g per 200 mL in the presence of acid? (Cr2O7-2 + 6Fe+3 + 14H+ → 2Cr3+ + 6Fe3+ + 7H2O) NOTE: Present complete solution and also the corresponding units.Identify the sources of chlorine in water and discuss the precautions need to be taken to minimize the errors in the experiment Estimation of Free ChlorinePhosphoric and acetic acids are considered to be weak acids; that is, they do not dissociate completely into ions. Were there any differences in reaction rates with magnesium between these two acids? If so, what distinguishing feature of the acids might explain the differences?
- Calculate the current intensity necessary to decompose all the sodium chloride contained in 600 ml of 2 M solution, if the current is circulated for 4 hours and the process yield is 85%.Describe the synthesis of all oxygen-iodine- containing acids starting from all theoretically- existing iodine-chlorine compounds by means of stoichiometric reaction equations and name the pertaining reaction products. Thank you!PSQ-4: A spoon is to be electroplated with Aus) using a solution containing Au* ions. If 29.55 grams of solid gold is required to be deposited in 2 hours, what must be the electrical current in amperes that must be used? (MW Au = 197g/mol; Faraday's constant = 96480 C/mol e) Round off your final answer to two decimal places. Do not write the unit.
- A solution of potassium permanganate of unknown concentration was analyzed against a standard of various concentrations. Refer to the following data set to answer the succeeding questions (MM KMNO4 = 158.034 g/mol). Table 1. Data for Standard Calibration Curve KMN04 Standard Absorbance at 525 nm (grams/Liter) 0.008 0.10437 0.158 0.20197 0.316 0.45288 0.474 0.68232 0.632 0.89361 Table 2. Data for KMNO4 Solution of Unknown Conc. Sample of Unknown Conc. Absorbance at 525 nm Undiluted 0.95423 KMNO4 Diluted KMNO4 0.46514 (50% dilution) What is the concentration of the undiluted KMNO4 solution? 6.872 g/L 1.6872 g/L 0.4872 g/L 0.6872 g/LWhich among these is the most important piece of data in a gravimetric analysis? Mass of analyte Mass of weighing form Mass of crucible Mass of precipitating agentDefine the attachment coefficient and explain the electron attachment process. Why are electron attaching gases useful for practical use as insulates when compared to non-attaching gases.