ew?assignmentProblemID=142966487&offset=next CHE154-H Gen Chem II Bronikowski S20 Part A Determine H30+] of a 0.180 M solution of formic acid (K, = 1.8 × 10-4). Express your answer using two significant figures. • View Available Hint(s) ΑΣφ [H3O+] = M Submit Part B Complete previous part(s) Provide Feedback
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- ALL INFORMATION NEEDED IS PROVIDED, I NEED FIRST QUESTIONS ANSWERED FIRST BEFORE OTHERS CAN BE ANSWEREDRate = -(Delta[RCl])/Delta t andln[RCl]t=-k*t+ln[RCl]0 < [R-Cl]-time equation Test tube A = 0.30 of 0.10M NaOH(aq), 6.70ml DI H2O & 1 drop of bromophenol bue Test Tube B = 3.00M of 0.10M R-CL in acetone. Mix together in 3 water baths Bath A Trial 1= 20C, 53.6s Trial 2= 20C, 49s for color to changeBath B Trial 1= 32C, 18s Trail 2= 32C, 20s Bath C Trial 1= 10C, 204s Trial B= 10C, 200s average out both trials for each bathcolor change happens after 10% of R-Cl has reacted so In terms of R-Cl this means that 10% of the R-Cl has reacted and ____ of the R-Cl is left Q1. at the time of the color change [R-Cl]t=____[R-Cl]o (Fill in the blank) Q4. Substitute the value of [R-Cl]t into appropriate equation listed above and solve for k in terms of [R-Cl] and t. Q5. Use average time for each temp and determine the value of k (with units) at each temperature Q6. Rearrange the Arrhenius…Q5: If the Ksp of Ca3N2 is 6.06 x 10-3, how many moles of calcium nitride (s) could you dissolve in 1.589 L of solvent (assume that calcium nitride (s) dissolves in water to form Ca2+(aq) and N3- (aq))? Enter your answer with at least 3 sig figs. Please provide only typed answer solution no handwritten solution needed allowedA stock solution of alcohol dehydrogenase (ADH) has been diluted 1 in 10 and the absorbance reading at 280 nm of this diluted solution is 0.04. Given that the absorption coefficient for ADH at 280 nm is e mg/ml = 1.6 and that you require to do 30 assays in triplicate, each assay using 2 ug of enzyme, how many ul of the stock ADH do you need to do the experiment?
- please provide the machanisms of 1a, 1e, 1fReagent is NOT (CH3)2CuLi. Which one works from the answer bank? iPrMgBr is (CH3)2CHMgBrThe leaves of the Brazilian Tree Senna multijunga contain a number of pryidine alkaloids that inhibit acetylcholinterinase. Two recentyl isolated isomeric compounds have the strcture have the strcture shown below. (NOTE: M=293) Use the mass spectral data provided to determine the precise location of the hydroxyl group in each isomer. Isomer A: EI-MS, m/z(rel. int): 222(20), 150(10), 136(25), 123(100) Isomer B:EI-MS, m/z(re;. int): 236(20), 150(10), 136(25), 123(100)
- Determine the Ksp of the following reactions. a. NaC2H3O2 ⇄ Na+ + C2H3O2- b. HBr⇄H++Br c. Zn(OH)2 ⇄ Zn+2 + 2HO-In the following cases rearrange the compounds as directed : (Delhi 2010)(i) In an increasing order of basic strength :C6H5NH2, C6H5 N(CH3)2, (C2H5)2NH and CH3NH2(ii) In a decreasing order of basic strength :Aniline, p-nitroaniline and p-toluidine(iii) In an increasing order of pKb values :C2H5NH2, C6H5 NHCH3, (C2H5)2NH and C6H5NH2Acetic acid (CH3COOH, abbrev. HA) is a very common weak acid with pKA = 4.75 (at 25oC and low ionic strength). Calculate pH of the diluted solution of acetic acid with concentration c = 0.05 mol dm-3.