If the unknown well water samples were analyzed at 508 nm but the external standard solutions were analyzed at 420nm, fully explain how this would influence your mean Fe2*concentration in the unknown well water sample.
Q: A conductivity cell has a resistance of 250 Ω when filled with 0.02 M KCl at 25°C and 105 Ω when…
A: Resistance of a conductor is directly proportional to the length of the conductor and inversely…
Q: Calculate the %(w/w) of solute and solvent in an alloy containing 15.0 g copper and 10.0 g nickel.
A: Mass percent [ %(w/w) ] :- The mass of a component present in 100 grams of the mixture is defined…
Q: ) Calculate the normality and formality of a potassium permanganate solution of which 35.00 mL are…
A: The question is based on the concept of quantitative estimation. we have to calculate formality and…
Q: At 298 K, the electrolytic conductivity of a 0.2 M KC1 solution is 2.50 X 10-2S cm-1. Calculate its…
A:
Q: How do I estimate the mean ionic activity coefficient of a 0.00250 mol/kg of AlBr3 @25°C by using…
A: The given chemical reaction is: AlBr3 ⇔ Al3+ + 3Br- According to Debye-Huckel limiting Law, logγ± =…
Q: The mean activity coefficients of HBr in three dilute aqueous solutions at 25° C are 0.930 (at 5.0…
A: Interpretation: Mean activity coefficients of HBr 0.930 (at 5.0 mmol kg-1), 0.907 (at 10.0 mmol…
Q: What is the dissociation factor "i" for non-electrolytes?
A: i = Actual number of particles in solution after dissociation or association divided…
Q: What are the advantages and disadvantages of volumetric and gravimetric analysis
A: Gravimetric analysis is a very accurate quantitative analysis .Advantages of gravimetric analysis…
Q: The mean activity coefficients of KCl in three dilute aqueous solutions at 25 °C are 0.927 (at 5.00…
A:
Q: Estimate the mean ionic activity coefficient and activity of a solution that is 0.015 mol kg-1…
A: SOLUTION: Step 1: [MgF2] = 0.015 mol/Kg, [NaCl] = 0.025 mol/Kg. First the ionic strength of each ion…
Q: Beer's law why does the procedure for measuring the concentration of a solution photometrically…
A: For the calibration of spectrophotometer blank solution is needed.
Q: Dissolved 0.273 grams of pure sodium oxalate (Na2C204) in distilled water and added sulfuric acid…
A: The question is based on redox titrations. we have added excess of KMnO4 to the Sodium oxalate. the…
Q: The interaction between a basic analyte and the residual silanol groups of the stationary phase is…
A: When pH of mobile phase is equal to pKa of silanol then its proton will get deprotonated and basic…
Q: (1/ The volume of an aqueous solution of KBr at 25 °C was measured at a series of molalities, m, and…
A:
Q: 4. Demonstrate the effect of composition on chemical potential in following Fig. -Free surface-…
A: In the following figure, compartment-I has pure water(solute) and compartment-II has…
Q: Consider an ideal solution of ethyl bromide (EtBr) and ethyl iodide (Etl) with 38 mol% Etl at 318 K.…
A: chemical potential: it is the partial molar function which gives the information of change in Gibbs…
Q: Calculate the ionic strength of a solution that is 0.15 mol kg-1 in KCI(aq) and 0.30 mol kg-1 in…
A: Given: Moles of the solution in KCl=0.15mol Kg-1 Moles of the solution in CuSO4=0.30 mol Kg-1
Q: Assuming the Debye Huckel Limiting Law applies, At 25°C, estimate the mean activity coefficient, of…
A:
Q: If 30.0 mL of water that is 0.0500 M in Q is to be extracted with four 10.0 mL portions of an…
A: The final aqueous concentration in solvent extraction method is as shown below: Here, Initial and…
Q: The mean activity coefficients of HBr in three dilute aqueous solutions at 25 °C are 0.930 (at 5.0…
A: GIVEN: Mean activity coefficients of HBr at 25 °C are 0.930 (at 5.0 mmol kg-1), 0.907 (at 10.0 mmol…
Q: If 250 mL of a 1:800 (v/v) solution were diluted to 1000 mL, what should be the ratio strength? The…
A:
Q: Calcium in a sample solution is determined by atomic absorption spectroscopy (AAS). A stock solution…
A: According to Beer's law, absorbance of a solution is directly proportional to its concentration.…
Q: why is equivalent weight of KMnO4 is different in acidic, alkaline and neutral medium ?
A: Equivalent weight of potassium permanganate in acidic, in basic, and neutral medium depends on…
Q: What is the correlation between distribution coefficient and polarity? There is 0.17 g of benzoic…
A: We are authorized to answer one question at a time, since you have not mentioned which question you…
Q: The molar conductivity of a 1.5 M solution of an electrolyte is found to be 138.9 S cm2mol-1.…
A: The molar conductivity and conductivity are related as-λm=κ×1000cc is concentrationκ is…
Q: Average activity coefficient for HBr is 0.930 for three different diluted solutions at 250C. (at m =…
A: Debye-Huckle equation is; log (γi)=-0.51z+z-μ1+Bμ Here γi is activity coefficient, zi charge of ion…
Q: 1. There is a substance in a solution (S.00 x1o M). when using a spectrophotometer, you find that…
A: According to Beer-Lambert's law, the concentration of a solution is directly related to the…
Q: Q2 At 291 K, the equivalent conductivities at infinite dilution of HCI, NaCl and CH3COONA are 369.3,…
A: First we will calculate equivalent conductivity at infinite dilution of CH3COOH. Using degree of…
Q: b) In one conductivity cell, the resistance of a 0.1 M KCl solution is 1.5x102 Ω. The known molar…
A: Introduction : We have to calculate cell constant . Given : Resistance of cell = 1.5 × 102 Ω…
Q: FORMULA QUESTION In one trial of this experiment, graphing Ecell against In Q for a series of…
A:
Q: Average activity coefficient for HBr at 25oC for three different diluted solutions is 0.930 (at m =…
A:
Q: How do I estimate the mean ionic activity coefficient of a 0.00125 mol/kg CuBr2 at 25°C and how do I…
A: Welcome to bartleby ! Introduction : We have to calculate mean ionic activity coefficient .
Q: Conductivity of 0.001028 M of acetic acid is 4.95 x 10-5 S cm-1. Calculate the dissociation constant…
A:
Q: uivalence point for a 20 mL lution of 0.25 M Benzoic Acid C7H5O2) with Ka = 6.30 x 105 rated with…
A: Ka = 6.30 ×10-5 pKa = -log(Ka) = -log(6.30 ×10-5) = 4.20 At equivalent point, Equivalents of…
Q: The electrolytic conductivity of a 0.1 M solution of acetic and was found to be 5.3 X 104 cm'.…
A:
Q: How does the spectrophotometer measure absorbance?
A: Hey, since there are multiple questions posted, we will answer first question. If you want any…
Q: .11 Express the mean activity coefficient of the ions in a solution of CaCl2 in terms of the…
A: Following is the expression for mean activity coefficient and activity coefficient of the given…
Q: 8. For a solution of 3.12 x103 mol/L CH;COOH the specific conductance 1.49 x 104 S/cm, and molar…
A: Calculation of molar conductance, ƛ: λ=k×1000M where k is the specific conductance and M is the…
Q: Why internal standard solutions are better and why we get a more uncertain result with other…
A: Internal standard: It is the chemical substance that is used in the analysis of compounds and this…
Q: 0.025 M CH3COOH solution has a specific conductance of 2.33X10-4 Scm-1 , and molar conductivity at…
A: Molar Conductivity: Molar conductivity is conductivity of a solution that contains 1 mol of the…
Q: If the unknown well water samples were analyzed at 550 nm but the external standard solutions were…
A: Solution -
Q: Mix a 0.1 N CH3COONa solution with a 0.2 N HCI solution (ratio of 1:1 by volumn). The equivalent…
A: Equivalent conductance is conductance of all the ions produced by dissolving i gram euivalent of a…
Q: 2. Describe the underlying principles behind the complexometric determination of water hardness.…
A: Water is pure when nothing is added to it, but it becomes hard when the calcium and magnesium ions…
Q: The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm-1. Calculate its molar…
A: Welcome to bartleby!
Q: What are the Practical Application of Standardadization of NaOH?
A: The process of standardization is used for the determination of the precise concentration or…
Q: Calculate the ionic strength of a solution that is 0.15 mol kg-1 in KCI(aq) and 0.30 mol kg-1 in…
A: Given: Molality of KCl = 0.15 mol kg-1 Molality of CuSO4 = 0.30 mol kg-1
Q: Q 1. At 291 K, the equivalent conductivities at infinite dilution of HCl „NaCl and CH3COONA are…
A:
Step by step
Solved in 4 steps
- Explain how to obtain larger particles based on the relative supersaturationThe entire mercury bulb of the thermometer must be below the level of the side – arm in order to obtain an accurate reading of the distillation temperature. Why is this so?Calculate the gravimetric factor of: FeO in Fe2O3 Bi2S3 in BaSO4 BaSO4 in (NH4)2SO4 Mn2O3 in Mn3O4 NOTE: Present complete solution and include the detailed computation of the molecular weight. Express your final answers up to FOUR decimal places.
- Your measurements indicate that the concentration at valve V7 is 2.04 ppm, while the concentration at thetop of the column is 3.06 ppm. Calculate the normalized concentration at V7. Report using four decimalfigures to an accuracy of ± 0.0001.The following molarities were calculated from replicate standardization of a solution: 0.5022, 0.5022, 0.5021, 0.5008, upper limit of the 95% confidence interval?Why is it important that the pressure is very low in EI-MS but much higher in CI-MS?
- A sample containing iron is approximately 99.0% w/w Fe. Using ammonia, iron is precipitated as Fe (OH)3 which is ignited to Fe203. (a) What is the gravimetric factor for analyte Fe (AW=55.85 g/mol) and precipitate Fe203 (FW=159.69 g/mol)? (b) What mass of sample is needed to ensure that the Fe203 precipitate would weigh at least 1.00 g?The following molarities were calculated from replicate standardization of a solution: 0.5021, 0.5015, 0.5035, 0.5007, 0.504, 0.5025, and 0.5008 M. Assuming no determinate errors, what is the upper limit of the 95% confidence interval?Calculate the values of vrms, vmp, and vmean for Cl2 (70.90 g mol-1) at 25 °C
- It is emphasized in the procedure that the water bath should be continuously stirred while heating and cooling the sample. What will happen if the water bath was not stirred? Identify its effect to the related derived dataThe original solution was diluted by a factor of three, and then the absorbance of the diluted cereal sample solution was measured and recorded as (2.0x10^-1). Use the following trendline and dilution factor to determine the concentration of iron, in unit of M, in the original cereal sample solution. The trendline (linear regression) as displayed on the plot is y = 11898x - 0.0112.Determine the percentage Fe in a sample of limonite from the following data:Sample : 0.5000g ; KMnO4 used = 50.00 ml ; 1.000ml of KMnO4 is equivalent 0.005317 g Fe,FeSO4 used = 6.00 ml; 1.000ml FeSO4 is equivalent 0.009200 g FeO ( ans 44.59 %)