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- The following compounds are available as 0.10 M aqueous solutions: pyridine triethylamine m-nitroaniline NaOH phenol HCIO HCIO4 (рКь = 8.82) (pKb = 3.25) (pKb = 11.53) (K₂ = 1.1 × 10-10) (K₂ = 2.9 × 10-8) Which two solutions could be combined to prepare a pH 6.7 buffer? HCIO and NaOH phenol and NaOH m-nitroaniline and HCIO4 pyridine and HCIO4What is the Kc expression for the following reaction? 2 NO2(g) + H2O(1) --> HNO2(aq) + HNOglaq) [[HNO2(aq)] [HNOglaq)] [NO2(g)]^2 OHNO,(aq)] [HNO3(aq)] [NO2(g)]^2 (H20(10) (HNO2(aq)) [HNOglaq)] 2 [NO2(g]]^2 [H2O(1) [HNO2(aq)) + [HNO3laq)] 2 INO2(g)] + [H20()]To analyze an aspirin sample, 0.3470 g of crushed tablets are weighed and treated with 50.00 mL 0.1155 M sodium hydroxide, boiling for 10 minutes. Under these conditions the acid acetylsalicylic (MW, 180) reacts according to: CH3COO-C6H4-COOH + 2 OH- → OH-C6H4-COO- + CH3COO- The excess NaOH is then titrated with 11.5 mL of 0.2100 M HCl. What is the purity of said show ?.
- (4c-201) Copy the following equation, and label the Bronsted-Lowry acid, its conjugate base, the Bronsted-Lowry base, and its conjugate acid. HNO3 + H2O → H30* + NO3¬ For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 14px A v ... In X2 田由田図 EX: ABC Ť {;} > >grammarly-G X * Content oard.odu.edu/ultra/courses/_393452_1/cl/outline F2 Question Completion Status: X GA student wan X 1 QUESTION 3 A student wants to determine the solubility of water and copper (1) bromide (a green solid) in ethyl acetate (a colorless organic liquid). She places 1 mL of ethyl acetate into each of two test tubes. To one, she adds 5 drops of water to it. To the other, she adds a small scoop of copper(1) bromide. 8.0 F3 2 - Which test tube represents the ethyl acetate and A. Test tube 1 copper(1) bromide if the copper(1) bromide is insoluble in ethyl B. Test tube 2 acetate? C. Test tube 3 D. Test tube 4 - Which test tube represents the mixture of the ethyl acetate and water if the water is insoluble in ethyl acetate? $ Question Com X C Chegg Search x 3 Which test tube represents the mixture of the ethyl acetate and water if the water is soluble in ethyl acetate? - Which test tube represents the ethyl acetate and copper(1) bromide if the copper(1) bromide is soluble…When a Vitamin C (ascorbic acid; MM = 176.12 g mol-1) tablet is crushed, dissolved and titrated with 0.0340 M KIO3(aq) to a purple/blue endpoint (given by a starch indicator), the volume of KIO3 used is 29.80 mL. If 60 mg of ascorbic acid is the recommended dietary allowance (i.e., 100% of the RDA), then what is the % RDA for the Vitamin C in the tablet? KIO3(aq) + 5 KI + 6 H+ → 3 I2(aq) + 3 H2O I2 (aq) + ascorbic acid → 2 I- + dehydroascorbic acid
- STROCTDREANOTROPERT CATIONSHId Applying like dissolves like For each solute, click the button under the better solvent. solute Which is the better solvent? H,0 CH, (CH), CH, CC, H. H OH OH :0: || но — сн,— CH— CH-СH— СH—с — Н H H. OH OH H,O CH, CH, OH :0: :0: :O: но — с - сH,— сн, —с- он CH,-S CH 75°F IIThe following data give the constant dissociation, K (for acetic acid at various temperatures) T("C) 0 10 15 25 K₂ 1.657 x 10 1.729 x 10 1.745 x 10-5 1.753 x 10 Part A Using the information that InK versus 1/T is a straight line with slope-AH/R. calculate AH for the lonization of acetic acid Express your answer with the appropriate units. AH 2.732 HA kJ mol Submit Previous Answers Request Answer Part B Complete previous panis) ? X Incorrect; Try Again; 4 attempts remaining Review | Constants I Periodic TableYou are given the following data: KAHCN = 6.2 x 10-10 Ka HF = 7.2 x 10-4 Ka CH, COOH = 1.8 x 10-5 Ka HOCN = 2.0 x 10-4 %3D Within an aqueous mixture containing 0.42 M CH,COOH and 0.54 M HCN, what are the concentrations of CH3COO and CN? OỊCH,Co0] = 4.4 x 103 M; [CN] = 4.7 x 107 M OỊCH;CO0] = 2.7 x 103 M: [CN] = 1.8 x 10-5 M OỊCH,CO0] = 2.7 x 103 M; [CN] = 1.2 x 107M O None of these answers OỊCH,Co0] = 1.2 x 103 M; [CN] = 2.7 x 107 M
- • How many grans and how many mL of 40.0 wt-% urea solution (density 1.111 g/mL) are required to react with 4.00 mol of Fe3+ in the following reactions? • (H2N)2CO + 3 H2O → CO2 + 2 NH4+ + 2 OH- Fe3+ +3 OH- + (x-1)H2O - FEOOH x x H2O(s)Based on the following data for the fırst order reaction J products, calculate the rate constant k (in s1). Time [J] Os 1.0000 M 900 .5231 3000 .1153 O 2.9 x 104 O 1.4 x 103 O 5.3 x 10-4 О 1.0 х 10-3 O 7.2 x 10-4You have a separatory funnel containing an immiscible mixture of 1-octanol (d = 0.824 g/mL) and aqueous NaOH. If you add the five compounds below and shake the funnel to mix, which compound(s) will be in which layer? LOH NH2 HO. A В C -OH D E A [ Choose ] Bottom Layer Тop Layer В TeHOuse jT [ Choose ] D [ Choose ) [ Choose ]