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- The pk, of formic acid is 3.750. What is the K, of formic acid? ons: Please watch the video on how to set up and perform a titrati /www.youtube.com/watch?v3sFpFCPTDv2w&t=D48s on calculation demonstration: https://www.youtube.com/watch?v he watching these videos, answer the following questions:1.) What is the pH of a solution of 0.010M CH3- (Kb = 1.0x1036) and 0.025M NH3 (Kb = 1.76x10-5)?Example (3) :- The Kinehics of hy droly sis of ethyl acetate was Studied in presence Hel by titrating th. reaction Solubon with standard basegmand ( NaoH) at 25 é , the tesults were as foll ows of o.05 M 120 2400 3500 24.36 25.85 2어.32 31.72 Calcutate the fate Constant,what is The order readion ? slafek
- (3). Write short notes on displacement titration with suitable example.Distribution Coefficient - Please help write conclusions based on results provided. Thank You! Results Equiv. wt. of acetic acid - 60.052 g/mol a. Volume of base required for first titration 10.10 mL- 0.0101 L b. Mass of acetic acid in the 10 mL aliquot 0.3033 g c. Volume of base required for second titration 6.53 ml. 0.00653 L d. Mass of acid left over in water layer 0.1961 g e. Mass of acid in ethyl acetate after a single 10 mL extraction 0.1072 g 6.29 ml.- 0.00629 L f. Volume of base required for third titration 0.1889 g g. Mass of acid in water layer 0.1144 g h. Mass of acid in ethyl acetate after two 5 mL extractions Kp (single extraction) 0.55 versus Kp (double extraction) 0.61Calcelate mokality of 52 (음)/ 아 to Solalicn. A) 0.65 p) 0 구2 () o.81 D) 0.94 Calulete pt of 0-001 M oK H Poa solation A) ) c) I.5 D) 2.5 NGOH 2 lit Hy soq mixed with Calulete pH of solution N of Nof slit of then A) 8.25 8) S.75 C) 7. 55 D) 9.45
- 1. A 2.2g methyl paraben (mEq of 0.152) was assayed using 50 ml of Sodium Hydroxide, 1.250 N and it consumed 31 ml to of 1.100N sulfuric acid to titrate the excess. In the blank, 42ml of the same acid solution was consumed. What is the percentage purity of Methylparaben? 2. If 25 ml of HCI solution required 26.25 ml of 0.0952N sodium hydroxide in a titration, what volume of the solution would produce 0.2867g of AgCl? (determine the N of acid solution, then use it for the volume that will react with AgCl) 3. A hydrochloric acid solution has AgCl titer of 0.1265, what is its Na2CO3 titer. ( determine the normality of acid using titer value of AgCl, then determine titer value of sodium carbonate) 4. Determine the weight of pure urea in a 500 mg sample if 15.35 ml of 0.4967N NaOH were required in the titration after the ammonia from the sample had been distilled into 50.0 ml of 0.4861N H2SO4.1.Determine the color of the indicator in a given condition: METHYL ORANGE IN AN ACIDIC ENVIRONMENT. 2.This is the measure of reproducibility of data within a series of results. 3.This is the chemical to be subjected to testing in titrimetric method of analysis. 4.Determine the type of assay employed for this substance: TARTARIC ACID 5.Determine the color of the indicator in a given condition: PHENOLPHTHALEIN IN AN ALKALINE ENVIRONMENT. Please help me answer this questions. the answers are on the image I attachedA 3.7145 g portion of disodium EDTA dihydrate (M.W. 372.24) was dissolved in enoughdistilled water of prepare 1.000 L of solution. A 100.0 mL water sample was adjusted topH 10 and titrated to the Eriochrome Black T end point with 11.23 mL of the EDTAsolution. When the pH of another 100.0 mL water sample was adjusted to pH 12 andtitrated with EDTA, 2.11 mL of titrant was required. Calculate the concentration of Ca(II)and Mg(II) in the water. Express the answers in mg/L of CaCl2 and MgSO 4 , respectively.
- The following is an alpha plot for a monoprotic weak acid, HA. 1.0 CL 0.5 2 4 6 pH 8 10 12 14 HA A ►A new indicator was found, at pH values less than 7.5 the indicator is blue and at values greater than 9.5 itis grey.A) What is the approximate pKa for this indicator?B) At a pH of 5.0, which species is dominant? HIn or In-?C) At a pH of 7.5, which species is dominant? HIn or In-?D) At a pH of 10.0 which species is dominant? HIn or In-?1. In Acidic Buffer solution [HNO,/INO,] when the value of pH pKa +1, the ratio of (HNO,1/INO,] is. 2. The most effective pH buffering range for a benzoic acid/benzoate buffer is.. ( Ka of benzoic acid - 6.3 x 10*) 3. The pOH of 20 % tltration of 20 ml of 0.10 M HCI with 0,10 M N2OH is. 4. If a 40.0 mL sample of 0.300 M formic acid is titrated with 0.200 M NAOH. at the equivalence point the pH is (Kb - 5.6x10-10 ). 5. An ore is analyzed for the Iron content by converting the Iron to Fe (OH), and weighing it. If a 1.543 g sample yields 0.160 g of Fe;Os, the percent of Fe,0, in the sample will be . [Fe,O3=160g/mol, Fe,0,-231.5 g/mol] ..... Use the editor to format your answer