The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0 g of luminol into a total volume of 75.0 mL of H3O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. > View Available Hint(s) ? molarity of luminol solution = Value Units Submit Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10-2 M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray? Express your answer with the appropriate units. View Availahle Hintie)

The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0 g of luminol into a total volume of 75.0 mL of H3O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. > View Available Hint(s) ? molarity of luminol solution = Value Units Submit Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10-2 M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray? Express your answer with the appropriate units. View Availahle Hintie)

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.17QAP

See similar textbooks

Similar questions

Calculate the pH at 25°C of a 0.64M solution of anilinium chloride C6H5NH3Cl. Note that aniline C6H5NH2 is a weak base with a pKb of 4.87.
Phenylamine is an aromatic amine that is used in the manufacture of dyes. When absorbed through the skin itcauses the Fe+2 in hemoglobin to become oxidized into Fe+3, resulting in the formation of methemoglobin whichcannot bind to or transport oxygen. Phenylamine is soluble in water and acts as a weak base.C6H5NH2 (aq) + H2O (ℓ) ⇋ C6H5NH3+ (aq) + OH- (aq)a. When you measure the concentrations of the ionized substances you find them to be:[C6H5NH2] = 0.234 mol/L [C6H5NH3+] = 2.8 x 10-5 mol/L [OH-]= 2.8 x 10-5 mol/LIf the Kb is 4.27 x 10-10, is the reaction at equilibrium? If not, which direction does it need to move (rightor left) to reach equilibrium? Explain. b. At equilibrium the concentrations of the ionized substances are:[C6H5NH2] = 0.0537 mol/L [C6H5NH3+] = 4.79 x 10-6 mol/L [OH-]= 4.79 x 10-6 mol/LIf this reaction is taking place in a 2.0L container, and 1.5 moles of phenylamine were added to thereaction, what will the new concentrations of the three ionic species be when…
Calculate the pH and concentrations of CH3NH2 and CH3NH+3 in a 0.0341 M methylamine (CH3NH2) solution. The Kb of CH3NH2 is 4.47×10−4.
Pls answer with complete solution using GRESA sketch a diagram (for better understanding)
Fe3+(aq) + SCN–(aq) ⇆ FeSCN2+(aq) Suppose that the solution of NaSCN was accidentally prepared using too much solid NaSCN, so that that solution had a higher [SCN-] value than expected. How would the resulting measured Keq value differ from the true Keq value: too large, too small, or unaffected? Explain
r Plase don't provide handwritten solution
How much mL of BaSO4 will be recovered given the following: Solution A: Na2SO4(aq) = 0.01 M; V = 100 mL Solution B: BaCl2(aq) = 0.1 M; V = 50 mL
A primary amine R-NH2 has pKb=5.15 at 25°C. A buffer solution is made by adding 1.27 moles of R-NH2 and 2.23 moles of R-NH3+Cl- to 1.0L of water. What is the pH of the solution at 25°C.
Hand written solution is not allowed and no answer from the chat gpt will dislike
t Plase don't provide handwritten solution
The Ka value for benzoic acid (C6H5COOH) is 6.3×10^−5 and for phenol (C6H5OH) thevalue of Ka is 1.3×10^−10. Which is a stronger base, C6H5COO− (aq) or C6H5O− (aq)?Explain your answer (write reactions to illustrate).
Soap manufacturers always use base to hydrolyze fats, and never acid. Suggest tworeasons that basic hydrolysis is preferred.e