Answered: What is the indicator of the end point…

What is the indicator of the end point for the Fajans method? A green fluorescence (B white precipitate (© red precipitate (D red fluorescence

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter14: Applications Of Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 14.6QAP: The accompanying data (1.00-cm cells) were obtained for the spectrophotometric titration 10.00 mL of...

See similar textbooks

Related questions

Q: A. Determine the pH and hydrogen ion concentration in a 0.1425M solution of ethylamine, C2H5NH2 at…

A: Note: As per the Guidelines solution of first question has been made. For the expert solution of…

Q: NUCLIDE CHARTS The nuclide of interest is Sc-49. Identify the: Decay mode: 1. Daughter nuclide: 2.…

A: Sc-49 is an unstable nuclei that can undergo decay to form stable nuclei.

Q: Which is NOT belong to the group

A: There are various types of intermolecular forces present in the molecules such as hydrogen bonding,…

Q: For the reaction of hydrogen gas with iodine gas to make hydrogen iodide gas, H2 + I2 → 2HI, you…

Q: Determine the energy for the first excited state for naphtacene assuming the box width equal 8.5 Å:

A: Given: Length of the box = 8.5 A° = 8.5 ×10-10 m

Q: A 1.40 m3 container holds a sample of O2 gas. At 282 K the pressure of the container is 1.04 x 105…

Q: How many mm are in 3.803 cm? 3.803 x mm 101 10-2 mm 3.803 x 10 mm 3.803 x 10 mm 3.803 x 102 mm

A: Distance is measured in different units such as meters (m) , centimetres (cm) , millimeters (mm) ,…

Q: If 0.100 grams of unknown solid are dissolved in water and titrated with 4.68 mL of the NaOH, what…

A: Molar mass is grams / moles. We have grams from the weighed mass, we can calculate moles of acid…

Q: Calculate the pH of a 0.40 M solution of HF (Ka = 3.5 × 10*) before and after lg of NaF is added to…

Q: 9. The table below shows the pH values of several unknown substances. Substance pH W 5.8 14.0 Y 7.0…

Q: than the entropy of amorphous solids. The entropy of crystalline solids is generally O higher O…

A: The correct answer is given below

Q: calculate the concentration of Au^3+ and Calculate Delta G° for this cell. 2) draw the cell, label…

Q: Balance the ff skeleton reactions and identify the oxidizing and reducing agents a) O2(g) + NO(g) +…

Q: Question 13 Determine the oxidation state of nitrogen in RBNO 2. +2 +3 -4 +5 A Moving to another…

A: In this question we have to tell the oxidation number of nitrogen.

Q: A 2.25 mol sample of an element has a mass of 51.8 g. What is the molar mass?

A: Answer: 23.02 g/mol

Q: ammonia water ethanol methane

A: A polar molecule has symmetrical distribution of electrons between bonded atoms and has a net dipole…

Q: The triphenylmethyl radical is highly delocalized by resonance. In the resonance hybrid, how many…

A: There are ten different positions have radical character

Q: A buffer solution contains 0.150 moles of HSO4° and 0.150 moles of SO,²² in a total volume of 0.250…

A: Given: HSO4- = 0.150 moles SO42- = 0.150 moles volume of solution = 0.250 L pKa = 1.90 To…

Q: silicon carbon nitrogen oxygen

A: Given,Which element is the most electronegative.Silicon,Carbon,Nitrogen and Oxygen.

Q: 3. The nuclide of interest is Re-187. Identify the: Decay mode: 1. Daughter nuclide: 2. Reaction…

A: Introduction :- β–decay :- "Whenever the element emits a β-particle, the mass number…

Q: Be sure to answer all parts. and AG° of a redox reaction at 25°C for which n = 1 and K = 4.3190?…

Q: Erythromycin is a weak base with a pka of= 5.2 What will be the ionisation state of the drug in…

A: Actually Erythromycin is a weak base with pKb = 5.2 Hence pKa = 14 - pKb = 14 - 5.2 = 8.8 The…

Q: 16.57 The acid-dissociation constant for benzoic acid (CgHsCOOH) is 6.3 × 10-$. Calculate the…

Q: Answer the following questions using the Haworth structure drawn below. Но CH2 OH OH ОН a. Identify…

A: This structure is a representation of α-D-glucopyranose.

Q: The following are properties of ionic compound: Except for

A: Crystalline solids can be defined as solids in which atoms are arranged in definite pattern.

Q: 8. Phosphoric acid is a triprotic acid, ionizing in the following sequential steps: H,PO, + H̟O…

A: Given equations are :

Q: calculate iodine value . Fatty acid Molecular Formula % 16:0 C16H32O2 13.2 16:1 C16H3002 0.2 18:0…

A: The iodine value of an oil is a measure of the degree of unsaturation which is defined as the number…

Q: В. CH;-0-C-(CH,)|6–CH3

A: A fat molecule contain two main groups one is Glycerol and other is fatty acid .In Triacylglycerol…

Q: 26 1 3. 12M9+On → le+

Q: 16.73 Ephedrine, a central nervous system stimulant, is used in nasal sprays as a decongestant. This…

Q: The value of Ecell at 25°C for the cell shown below is +1.27 V. What is the value of E°cell? Cd(s) |…

Q: A 60.0 g sample of water (CW) at 8.0°C is mixed with 80.0 g water (HW) at 58.0°C in a coffee cup…

A: Given that - Mass of sample of water (CW), M1 = 60.0 g Mass of water (HW) , M2 = 80.0 g…

Q: Describe the difference between an aldehyde and a ketone, and indicate how each differs from an…

A: Both aldehydes and ketones are carbonic chemicals containing a carbonyl group. A carbonyl group…

Q: What is the Ecell for the cell represented by the combination of the following half-reactions? 2H92…

Q: HO CH3

A: The key steps involved in this synthesis are fridlecraft alkylation, grignard reagent formation and…

Q: 100ml of sodium hydroxide solution is required 20ml of 0.5 N sulfuric acid solution to neutralize…

Q: 1. Provide the major products of each reaction sequence below. 1. PhBr, Pd(PPh,), Cul, NEt, 2.…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Mass of Inner cup with stirrer on the digital balance=36.7 Mass of Inner cup with stirrer and warm…

A: Given :- Mass of Inner cup + stirrer(M') = 36.7g Mass of Inner cup + stirrer + warm water(M") =…

Q: Thermodynamics describes an electrochemical gradient. b. a. loss through heat. increasing order d.…

A: We have to tell among the given options which is described by thermodynamics. The given options are…

Q: 6. What is the pH of a solution with a hydrogen concentration of 2.3x10-5M?

Q: Calculate the concentration of H+ in a solution of pH = 1.25.

A: pH of the solution = 1.25 Concentration of H+ = ?

Q: all possibilities drawn out please

Q: Using your knowledge of the relative strengths of the various forces, rank the substances in…

A: The boiling point depends upon the intermolecular forces acting upon. More stronger the force, it…

Q: 14. Provide the product resulting from the following reaction. OsO,, NaHSO, но OH HO OH Page 4 15.…

Q: The name of the product of this reaction is:

A: In this question we have to tell the name of the reaction.

Q: Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid…

A: A conjugate base is formed when proton removed from acid whereas a conjugate acid is formed when…

Q: 4. Identify each of the following as reduction or oxidation (briefly explain your reasoning): (a)…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 0.4M solution of NH3 (1L in total) contains 12.78 g of NH,CI. Calculate the ApH observed if we…

Q: The oxidation of nitrogen oxide produces nitrogen dioxide, as shown below: 2NO (g) + O2 (g) → 2NO2…

Q: Calculate the following values and indicate what type of electromagnetic radiation is present. (a)…

A: Here we are required to find the following value and the type of electromagnetic radiation

Question

John Dave Santos
What is the indicator of the end point for the Fajans method?
(A green fluorescence
B white precipitate
red precipitate
D) red fluorescence

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Using the term u of KSP experimental procedure the 6 p.m. As you add 5 ml of .004M AgNo to 5ml of .0025M K2CrO4. Is either of these reagents in excess? If so which one?
one of the following is correct about Fajans method a. adsorption of Fluorescence on precipitate transfer the color from the precipitate to the solution b. the primary layer of precipitate before reaching the end point has a negative charge c. none of them d. Fluorescence is a basic dye ionized during the titration
The accompanying data (1.00-cm cells) were obtained for the spectrophotometric titration 10.00 mL of Pd(II) with 2.44 10-4 M Nitroso R(O. W Rollins and M. M. Oldham, Anal. chem .,1971, 43, 262, DOI: 10.1021/ac60297a026). Calculate the concentration of the Pd(II) solution, given that the ligand-to-cation ratio in the colored product is 2:1
A 1.000-g sample containing bromide was dissolved in sufficient water to give 100.0 mL. A 50.00 mL aliquot was measured and after acidification, silver nitrate was introduced to precipitate AgBr, which was filtered, washed, and then dissolved in an ammoniacal solution of potassium tetracyanonickelate(II): Ni(CN)42- + 2AgBr(s) → 2Ag(CN)2- + Ni2+ + 2Br-Nickel ion required 11.70 mL of 0.002146 M EDTAWhat is the percentage of NaBr (102.894) in the 1.000 g sample?
What is the volume of chloroform required to decrease the concentration of iron (III) in water (50 ml) as [Fe(CNS)6]3- at 20 ppm to 0.1 ppm concentration level in the presence of selective quaternary ammonium or phosphonium salt assuming the distribution ratio of iron (III) complex between chloroform/ water in the presence of the onium and/or phophonium cation =100. What the extraction percentage will be if the volume of the organic solvent is doubled.
Is the Cu detectable at a concentration of 0.10 mg/L in Flame-AAS? Please use data given.
A 1.000-g sample containing bromide was dissolved in sufficient water to give 100.0 mL. A 50.00 mL aliquot was measured and after acidification, silver nitrate was introduced to precipitate AgBr, which was filtered, washed, and then dissolved in an ammoniacal solution of potassium tetracyanonickelate(II): Ni(CN)42- + 2AgBr(s) → 2Ag(CN)2- + Ni2+ + 2Br- The liberated nickel ion required 11.70 mL of 0.002146 M EDTA. Calculate mmol Ni in the 50.00 mL aliquot. Calculate mmol Br- in the 50.00 mL aliquot. Calculate the percentage of NaBr (102.894) in the 1.000 g sample.
A 1.000-g sample containing bromide was dissolved in sufficient water to give 100.0 mL. A 50.00 mL aliquot was measured and after acidification, silver nitrate was introduced to precipitate AgBr, which was filtered, washed, and then dissolved in an ammoniacal solution of potassium tetracyanonickelate(II): Ni(CN)42- + 2AgBr(s) → 2Ag(CN)2- + Ni2+ + 2Br- The liberated nickel ion required 11.70 mL of 0.002146 M EDTA The other 50.00 mL remaining solution was also analyzed for its Br- content by potentiometry using a metallic electrode of the second kind. Ecell recorded in running the solution using the potentiometric set-up was Ecell = 0.0286 V. (E0Ag/AgBr = 0.095 V) g) Compute for Eind. h) Compute pBr in the 50.00 mL aliquot. i) Compute for % NaBr ( in the potentiometric technique). j) Calculate the error between the obtained % NaBr fr the EDTA titration technique and the % NaBr from the potentiometric technique.
At 25oC the Ksp for PbCl2 is 1.6 × 10–5. Calculate Q for the following: 125.0 mL of 0.0100 M Pb(NO3)2 is mixed with 75.0 mL of 0.0200 M NaCl at 25oC
A solid containing tris was dissolved in water and brought to a total volume of 50.00 ml. A 10.00 ml aliquot of the solution was titrated with 0.09978 M HCl to a bromcresol green endpoint. The aliquot consumed 38.93 ml of titrant. Calculate the weight of tris in the original sample.
Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value (ET) for the quantity being sought by writing either <, >, or = on the space provided Determination of the true concentration (ppm Fe) in a water sample using the iron-phenanthroline method. Dilution factor was not taken into account. EX _____ 1ET
Calculate the Molar absorptivity constant of a this metal complex solution read at 510 nm using a 50 mm cuvette. C = 1.00 mg/L as Fe Abs = 0.967 (Write answer in whole number, with no decimal and unit)