A plot of Absorbance vs. molarity of Fe(SCN)2+ from part one of the lab gives a straight line with the following equation. y = 51x  R2 = 0.998 If a student measures an absorbance value of 0.375 in the second part of the lab, what is the molarity of Fe(SCN)2+ in this solution?

Q: Titration of 15.00 mL of a weak, monoprotic acid solution requires 22.84 mL of a 0.09837M…

A: Given  Volume of weak acid ( V1 ) = 15 mL  Volume of NaOH solution ( V2  )    =  22.84 mL Molarity…

Q: A solution contains some or all of the ions Cu2+Cu2+, Al3+Al3+, K+K+, Ca2+Ca2+, Ba2+Ba2+, Pb2+Pb2+,…

A: We can perform the analytical study in case of mixture of metal dissolved in solution. By doing…

Q: A solution (50.00 mL) of citric acid (a weak acid with concentration 0.0950 M and Ka = 1.8 × 10−5)…

A:

Q: 2. Write the balanced equations for the chemical reactions below. Mind that calcium carbonate is an…

A:

Q: Starting with 2.0 g of hand sanitizer in 10 mL of methanol (density of methanol = 0.791 g/mL), the…

A: Given that

Q: Write an equation for the dissolution of HCI, NH4OH, and C₂H5OH in water. Normal : B|I\U HCl(aq)…

A:

Q: In the second part of this experiment, a student makes a solution with initial concentrations of…

A: The equation showing the formation of complex ion [Fe(SCN)]2+ is as: Given data: Initial…

Q: Please write a paragraph of the objective stated using the two images attached below Please please…

A: Acid-base titrations are analytical methods that are employed in the determination of an unknown…

Q: 15.0 grams of an unknown acid is dissolved to a final volume of 100.0 ml and measured to have a pH…

A:

Q: The plot below is for the titration of 30.00 mL CH3COOH with 0.150M KOH: CH3COOH (aq) + KOH(aq) →…

A: Given: VCH3COOH = 30.0 ml , MKOH = 0.150 MVKOH = 38.2 ml (at the equivalence point from the given…

Q: How many grams of CaCO3 will dissolve in 2.50×102 mL of 0.0480 M Ca(NO3)2?  The Ksp for CaCO3 is…

A:

Q: 51 mL of 0.060 M NaF is mixed with 17 mL of 0.15 M Sr(NO3)2. Calculate the concentration of F- in…

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Q: Calculate the MW from the average EM.  MW (g/mol) = n(eq/mol) x EM (g/eq) where n is the number of…

A: Interpretation-  To determine the MW from the average EM for the given two trials that is given as -…

Q: In the titration of 25.00 mL of a water sample, it took 20.690 mL of 4.050x 10−3 M EDTA solution to…

A: Number of moles of EDTA is determined as follows,

Q: 1. A 0.0722 M solution of a weak acid has a pH of 3.11. Calculate the Ka of this acid.. х 10-6 2. A…

A:

Q: The titration on the right was performed by placing 10.00 mL solution in an Erlenmeyer flask and…

A: Indicators -  Acid, base indicators are basically weak organic acids that change color when they…

Q: A solution is prepared by adding 0.18 mole of Ni(NH3) 6 Cl₂ to 0.50 L of 2.0 M NH3. Calculate…

A: Answer:Transition metal ions have the tendency to form a very stable complex with electron rich…

Q: Calculate the molar solubility of Ca(OH)2 (Ksp = 5.02 x 10) in %3D solution that is buffered at pH=…

A:

Q: A solution containing 0.11 M Pb²+, 1.5 × 10-6 M Pb4+, 1.5 × 10-6 M Mn²+, 0.11 M MnO, and 0.80 M HNO3…

A: To calculate the E°cell, ∆G° and K for the following reaction.  5Pb4++ 2Mn2+ + 8H2O ⇌5Pb2+ + 2MnO4-…

Q: Ⓒ Macmillan Learning A solution containing 0.11 M Pb²+, 1.5 × 10-6 M Pb4 +, 1.5 × 10-6 M Mn² +, 0.11…

A: Data

Q: If the base (NaOH) is standardized to 0.12 M in Part A of this experiment, calculate the amount of…

A: The reaction between oxalic acid dihydrate and NaOH is ; H2C2O4·2H2O + 2NaOH → Na2C2O4 + 4H2O From…

Q: 62 a b d e Consider the titration of 50.0 mL of 0.303 M weak base B (Kb = 7.5 x 10-6) with 0.340 M…

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Q: Bar-code scanners at supermarkets emit orange-red laser light with a wavelength of 633 nm. If the…

A: The energy and number of photons are related to each other by formula : E = n h v  Here , E = Energy…

Q: Find Moles NaOH required for titration HC2H302 NaOH -> H20NaC2H302 Volume of vinegar sample…

A: The given titration is an acid-base titration.

Q: For the titration of 20.0 mL of 0.150 M acetic acid (CH₂COOH, K₂ = 1.8x105) with 0.150 M NaOH, what…

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Q: Determining the Ksp of Calcium Hydroxide: Ca(OH)2 (s) ↔ Ca2+ (aq) + 2OH– (aq) Ksp = [Ca2+][OH–]2…

A: Acid-base titrations involve neutralization of an acid by a base. This is called neutralization. If…

Q: -5 Calculate the pH of the buffer system made up of 0.19 M NH3 and 0.46 M NH4Cl. The K of NH3 is 1.8…

A: The question is based on the concept of pH of the solution.  It is defined as a negative logarithm…

Q: For each of the following compounds, decide whether the compound's solubility in aqueous solution…

A: The solubility of an ionic compound changes with pH if it produces an ion that reacts with H+(aq)…

Q: The Ksp of Mg(OH)2 was determined from the following data: 0.0504 L of Mg(OH)2 solution was titrated…

A: Given, Volume of Mg(OH)2 = 0.0504 L Volume of HCl = 0.02474 L Concentration of HCl = 0.534 M

Q: Write the concentration equilibrium constant expression for this reaction. 3+ 31₂(s) + 2 Cr³+…

A: Recall the given reaction,                                     3 I2 s + 2 Cr3+ aq + 7 H2O l →…

Q: Determine the molarity of the 10.00 mL standard EDTA solution titrated using 1.000 g zinc sulfate in…

A: 1- First determine the moles of ZnSO4 :  Moles = [ mass / molar mass ]  Moles = [ 1.000g /…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.