4 decimal places Table 5.1. Determination of the purity of KHP sample.ParameterTrial 1Trial 2| weight of container + KHP, gweight of container + remaining KHP, gweight of KHP, gfinal volume of N2OH, mLinitial volume of NaOH, mLvolume of NaOH used, mL71.577770.362970.362969.105631.4033.301.553.20concentration of NaOH used, N0.04960.0496mass of KHP in the sample, g| % purity of KHP sample% purity of KHP sample (average)

Answered: Image /qna-images/answer/207c640f-695f-4416-868b-7ed341c8f7e3.jpg

Table 5.1. Determination of the purity of KHP sample. Parameter Trial 1 Trial 2 weight of container + KHP, g weight of container + remaining KHP, g weight of KHP, g final volume of NaOH, mL 71.5777 70.3629 70.3629 69.1056 31.40 33.30 initial volume of NaOH, mL 1.55 3.20 volume of NaOH used, ml concentration of NaOH used, N mass of KHP in the sample, g % purity of KHP sample % purity of KHP sample (average) 0.0496 0.0496

Table 5.1. Determination of the purity of KHP sample. Parameter Trial 1 Trial 2 weight of container + KHP, g weight of container + remaining KHP, g weight of KHP, g final volume of NaOH, mL 71.5777 70.3629 70.3629 69.1056 31.40 33.30 initial volume of NaOH, mL 1.55 3.20 volume of NaOH used, ml concentration of NaOH used, N mass of KHP in the sample, g % purity of KHP sample % purity of KHP sample (average) 0.0496 0.0496

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter14: Chromatography

Section: Chapter Questions

Problem 9P

See similar textbooks

Similar questions

1. Estimate the density of a 25-API gravity dead oil at 100 F.
Downvoted for wrong solution. A river is carrying water containing 2000 mg/l Magnesium Chloride into a small lake. The lake has a naturally occurring Magnesium Chloride of 50 mg/l. If the river flow is 2500 Lmin and the lake flow rate is 1.5 m³.sec¹, what is the concentration of MgCl2 in the lake after the discharge point? Assume that the flows in the river and lake are completely mixed, that the salt is a conservative substance, and the system is at steady state.
Use only the first decimal points (X.X) for atomic masses. R = 8.314 L*kPa/mole*K. In a reactor at 350.0 kPA and 95 °C, HCl adds to acetylene by the following reaction:2HCl(g) + C2H2(g) --> C2Cl2H4(g)39.1 g of HCl and 39.1 g of acetylene are placed into the reactor. What is the limiting reagent? What is the final volume of the system?
Using the percent purity calculations, determine the percent yield of synthesis of aspirin. Part I Synthesis of Aspirin Mass of salicylic acid used (g) 2.029g Volume of acetic anhydride used (mL) 5ml Mass of acetic anhydride used (vol. × 1.08 g/mL) 5.4g Mass of aspirin synthesized (g) 3.256g Part II Melting Temperature Data Melting temperature (°C) 133°C Part III Salicylic Acid Standard Stock Solution Initial mass of salicylic acid (g) 0.210g Moles of salicylic acid (mol) 0.0147 mol Initial molarity of salicylic acid (M) 0.724 M Part III Beer’s Law Data for Salicylic Acid Standard Solutions Trial Concentration (M) Absorbance Water (mL) 1 10 0.301 0 2 7.5 0.219 2.5 3 5.0 0.163 5.0 4 2.5 0.074 7.5 Best-fit line equation for the salicylic acid standards Test of the Purity of the Synthesized Aspirin Initial mass of aliquot of product (g)…
There's 1 drink (and you are asked to determine the glucose concentration in the drink in the units of g/100mL. (Why these units? Well, once you have the concentrations in g/100mL you will be able to compare your values with the nutritional values given on the drink bottles’ labels). The sample of the drink was diluted 1/100 (i.e. by a factor of 100). This was an essential step in the method because, without it, the machine used to analyse the glucose concentration (spectrophotometer) would have given an error as the concentration would have been too high for accurate detection. What this means for you is that the dilution factor will need to be taken into consideration in your calculations (remember the aim is to calculate the concentration in the original drink and not in the diluted drink). You measured the concentration of their diluted drink using the spectrophotometer and their results were provided to them in the units mM (millimolar). Glucose Concentration in mM of drink =…
There's 1 drink (and you are asked to determine the glucose concentration in the drink in the units of g/100mL. (Why these units? Well, once you have the concentrations in g/100mL you will be able to compare your values with the nutritional values given on the drink bottles’ labels). The sample of the drink was diluted 1/100 (i.e. by a factor of 100). This was an essential step in the method because, without it, the machine used to analyse the glucose concentration (spectrophotometer) would have given an error as the concentration would have been too high for accurate detection. What this means for you is that the dilution factor will need to be taken into consideration in your calculations (remember the aim is to calculate the concentration in the original drink and not in the diluted drink). You measured the concentration of their diluted drink using the spectrophotometer and their results were provided to them in the units mM (millimolar). Glucose Concentration in mM of drink =…
150 kmol of an aqueous phosphoric acid solution contains S mol percent H3P04. The solution is concentrated by adding pure phosphoric acid at a rate of 20L per minute. Write a differential mole balance on phosphoric acid and provide an initial condition. Solve the balance to abtain an expression vdor np(t) . Use the result to derive an expression far xp(t), the mole fraction of phosphoric acid in the solution. How long will it take to concentrate the solution to IS percent H3P04 ?
Penicillin is hydrolyzed and thereby rendered inactive by beta-lactamase, an enzyme present in some penicillin-resistant bacteria. The mass of this enzyme is 30.0 kDa. The amount of penicillin hydrolyzed in 1 minute in a 1 mL solution containing 3 x 10-3 g of the enzyme was measured as a function of the concentration of penicillin. Calculate Km, Vmax , and kcat from the following data: (Clearly show where 1/Vmax and -1/Km are; clearly explain how to obtain your kcat value). [S] (mM) vo (mM s-1) 0.14 0.138 0.28 0.234 0.55 0.333 0.77 0.388 1.52 0.491
A solution containing 100 lbm KNO 3/100 lbm H 2O at 80°C is fed to a cooling crystallizer operated at 25°C. Slurry from the crystallizer (KNO3 crystals suspended in saturated solution) is fed to a filter, where the crystals are separated from the solution. Use the solubility data in Figure 6.5-1 to determine the production rate of crystals (lbm/lbm feed) and the solid-to-liquid mass ratio (lbm crystals/lbm liquid) in the slurry leaving the crystallizer.
A mixture of ethanol (ethyl alcohol) and water contains 40.0% water by mass.(a) Assuming volume additivity of the components, estimate the specific gravity of themixture at 20°C. What volume (in liters) of this mixture is required to provide 150 mol ofethanol?(b) Repeat Part (a) with the additional information that the specific gravity of the mixture at20°C is 0.89045 (making it unnecessary to assume volume additivity). What percentage errorresults from the volume-additivity assumption?
What is the Molecular weight of a certain volatile liquid which is placed in 225 g flask which has total capacity volume of 252.17 mL. After the liquid was heated to 96.7 oC the gass volatilized and the weight of the flask measure 227.33g. What is the could be the MW of the volatile sample?
Sum of coefficients C7H8 + O2 --> CO2 + H2O after balancing