Given that the ASA (concentration of acetylsalicylic acid) is
0.0087 M, calculate the concentration of tetraaquasalicylato ion
[Fe(H2O)4SA]+ in solution 1
Solution 1: volume = 2.00 mL,
absorbance = 0.339
If you could show work that would be great! Thank you soo much!!
[H+] = 0.0087 M per liter
[H+] equal to tetraaquasalicylato ion at 2ml
so
the concentration of tetraaquasalicylato ion in 2ml = 0.0087/0.002 = 4.35 M
Given that the ASA (concentration of acetylsalicylic acid) is 0.0087 M, calculate the concentration of tetraaquasalicylato...
Aspirin is acetylsalicylic
acid (ASA) (
C9H8O4). It reacts with NaOH ( a
base) to produce salt (sodium acetylate) and water. Both Aspirin
and NaOH react in 1:1 molar ratio, as
C9H8O4
+
NaOH →
NaC9H7O4
+ H2O
So, moles of NaOH = moles of ASA
Or, mmol of of NaOH = mmole of
ASA
; mmol is milli mol
and mmole of NaOH = Molarity of NaOH * Volume
of naOH used (in ml)
=
(0.1177 M) *...
II. Digestion of Acetylsalicylic acid(standard and tablet) with NaOH . Digestion of Acetylsalicylic Acid Standard to Prepare Stock Solution: Obtain ca. 0.1 g dried acetylsalicylic acid (MM = 180.16 g/mol), accurately weighed, and quantitatively transfer to a 125-ml Erlenmeyer flask. Add 5 ml 1.0 M NaOH and heat mixture to boiling on a hot plate. This will hydrolyze the acetylsalicylic acid to sodium salicylate. If necessary, rinse down the walls of the Erlenmeyer with DI water to ensure complete hydrolysis...
Molar absorptivity for acetylsalicylic acid solution in 50% ethanol is 1120 at 276 nm. Calculate the absorbance of a 2.00 ×10^-4 M solution of this compound complex in a 2.00 cm cell.
Calculate the acetate ion concentration in a solution prepared bydissolving 3.80×10^-3 mol of HCl(g) in 1.00 L of 2.00 Maqueous acetic acid (Ka = 1.80×10^-5).Calculate the pH of the above solutionMy work :Ka = product/ reactant1.8 x 10^-5 = [CH3COOCl][H2O] / [HCl][CH3COOH]1.8 x 10^-5 = [CH3COOCl][1] / [3.8 x 10^-3 M][2M]CH3COOCl = 0.006But this is incorrect. What am I doing wrong? Thank you for yourtime!
3a) The solubility of Aspirin (acetylsalicylic acid) at 25C is 3.0 mg/mL of water. Calculate the molar concentration (M) of acetylsalicylic acid in solution at this temperature. What density assumption can help you in solving this problem? b) The acid dissociation constant, Ka for acetylsalicylic acid is 3.0 x 10 -4. calculate the pH of this solution.
The hydronium ion concentration of an aqueous solution of 0.42 M acetylsalicylic acid (aspirin), HC9H7O4, is [H3O+] = ___M
The hydroxide ion concentration of an aqueous solution of 0.454 M acetylsalicylic acid (aspirin) , HC9H7O4, is [OH-] = M.
The hydronium ion concentration of an aqueous solution of 0.47 M acetylsalicylic acid (aspirin), HC9H7O4, is [H3O+] = ___M
this is from the lab Spectrophometric determination of Aspirin
content of tablets. How do find the concentration using beers law?
CUI Dele t on Aspirin Content Determination of ASA Content of Tablets Lab Report You have entered the following experimental values: Mass of pure acetylsalicylic acid (ASA) : 0.519 g Dilution 2:11 4:11 6:11 8:11 10:11 Absorbance (a.u.) 0.119 0.239 0.344 0.470 0.564 Mass of tablet : 0.3589 Absorbance read on the Spectrovis Plus : 0.282 a.u. The questions below...
You are given 75 mL of 0.70 M acetic acid/acetate buffer to test. The starting composition of the two major species are: Concentration of CH,COOH: 0.250 M Concentration of CH,COO: 0.450 M a. Calculate the initial pH of the buffer. Clearly show all work required to arrive at your answer. b. You add 1.0 mL of 2.00 M HCl to the buffer. Calculate the molarity of H, O' added as HCl, and the final molarities of acetic acid and acetate...