A comparative analysis of organic compounds were done on various unknown samples labelled as A, G, N, U, Y. After multiple solubility tests, the following observations were recorded: I. Sample G dissolved in water and produced litmus paper results: Red - Red; Blue - Red II. Sample A did not dissolve in water, but dissolved in aq. HCI. III. Sample N did not dissolve in water, but dissolved in aq. NaOH. Further testing confirmed that it is insoluble in aq. NaHCO3. IV. Sample Y dissolved in water and produced litmus paper results: Red → Blue; Blue - Blue V. Sample U is insoluble in H20, aq. NaOH, aq. HCI and concentrated H2SO4. v What is the most probable identity of sample G? a. hexanamine - What is the most probable identity of sample A? b. alkane v What is the most probable identity of sample N? c. carboxylic acid v What is the most probable identity of sample Y? d. phenol v What is the most probable identity of sample U? e. methanamine

A comparative analysis of organic compounds were done on various unknown samples labelled as A, G, N, U, Y. After multiple solubility tests, the following observations were recorded: I. Sample G dissolved in water and produced litmus paper results: Red - Red; Blue - Red II. Sample A did not dissolve in water, but dissolved in aq. HCI. III. Sample N did not dissolve in water, but dissolved in aq. NaOH. Further testing confirmed that it is insoluble in aq. NaHCO3. IV. Sample Y dissolved in water and produced litmus paper results: Red → Blue; Blue - Blue V. Sample U is insoluble in H20, aq. NaOH, aq. HCI and concentrated H2SO4. v What is the most probable identity of sample G? a. hexanamine - What is the most probable identity of sample A? b. alkane v What is the most probable identity of sample N? c. carboxylic acid v What is the most probable identity of sample Y? d. phenol v What is the most probable identity of sample U? e. methanamine

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 9RQ: What characterizes an electrolytic cell? What is an ampere? When the current applied to an...

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What characterizes an electrolytic cell? What is an ampere? When the current applied to an electrolytic cell is multiplied by the time in seconds, what quantity is determined? How is this quantity converted to moles of electrons required? How are moles of electrons required converted to moles of metal plated out? What does plating mean? How do you predict the cathode and the anode half-reactions in an electrolytic cell? Why is the electrolysis of molten salts much easier to predict in terms of what occurs at the anode and cathode than the electrolysis of aqueous dissolved salts? What is overvoltage?
Differentiate Precipitation and Agglutination reactions based on: Time duration of the procedure. Reactants involved. EXPLAIN EACH PLEASE THANK YOU
To compute the solubility product (Ksp) of barium nitrate (Ba(NO3)2), an excess amount of Ba(NO3)2 was added to 2 liters of water at 25 degrees celcius until the solution is saturated. Ba(NO3)2 is only slightly soluble in water. It was observed in their experiments that the solution boils at 100.15 K. Barium nitrate dissociates via the process: ?a(NO3)2(s) ⇄ Ba2+(aq) + 2NO3- (aq) Ksp = [Ba2+][NO3-]2 What is the solubility product Ksp and vapor pressure of the solution?
Sample Mass of Original Mixture (g) Mass of Watch Glass (g) Mass of Filter Paper (g) Mass of Watch Glass, Filter Paper, and Precipitate (g) Avery 2.023 31.997 0.220 32.949 Zachariah 1.992 27.391 0.198 28.164 Sample Results from addition of ZnSO4 to supernatant (Beaker 1) Results from addition of Na3PO4 to supernatant (Beaker 2) Avery No change Precipitate forms Zachariah Precipitate forms No change 3 ZnSO4(aq) + 2 Na3PO4(aq) Zn3(PO4)2(s) + 3 Na2SO4 What was the mass, in grams, of the limiting reactant in the original mixture for Avery’s experiment?
A(n) _____________ is a species that exists for a finite period of time during a reaction before it is converted to product.
Write the expression for Kc for the following reactions. Ineach case indicate whether the reaction is homogeneousor heterogeneous.(a) 3 NO(g) ⇌ N2O(g) + NO2(g)(b) CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g)(c) Ni(CO)4(g) ⇌ Ni(s)+ 4 CO(g)(d) HF(aq) ⇌ H+(aq) + F-(aq)(e) 2 Ag(s) + Zn2+(aq) ⇌ 2 Ag+(aq) + Zn(s)(f) H2O(l) ⇌ H+(aq) + OH-(aq)(g) 2 H2O(l) ⇌ 2 H+(aq) + 2 OH-(aq)
The efficiency of a particular catalyst is highly dependent on its zirconium content. The starting material for this preparation is received in batches that assay between 68% and 84% ZrCl4. Routine analysis based on precipitation of AgCl is feasible, if having been established that there are no sources of chloride ion other than the ZrCl4 in the sample. (a) What sample mass should be taken to ensure an AgCl precipitate that weighs at least 0.400g? (b) If this sample mass is used, what is the maximum mass of AgCl that can be expected in this analysis? (c) To simplify calculations, what sample mass should be taken to have the percentage of ZrCl4 exceed the mass of AgCl produced by a factor of 100?
634 mK/s = _______ K/s
Sodium chloride is added slowly to a solution that is 0.010 M in Cu+, Ag+, and Au+. Because solubility "rules" are generalizations, we don't use solubility rules when we have the specific Ksp data available. Instead, here, we can just use the Ksp value for CuCl which is 1.9 × 10–7, for AgCl is 1.6 × 10–10, and for AuCl is 2.0 × 10–13. Based on these specific Ksp values, which compound will precipitate first? All will precipitate at the same time. It cannot be determined. CuCl(s) AgCl(s) AuCl(s)
Some sulfuric acid is spilled on a lab bench. You can neutralizethe acid by sprinkling sodium bicarbonate on it and thenmopping up the resulting solution. The sodium bicarbonatereacts with sulfuric acid according to:2 NaHCO31s2 + H2SO41aq2¡Na2SO41aq2 +2 H2O1l2 + 2 CO21g2Sodium bicarbonate is added until the fizzing due to the formationof CO21g2 stops. If 27 mL of 6.0 M H2SO4 was spilled,what is the minimum mass of NaHCO3 that must be addedto the spill to neutralize the acid?
The efficiency of a particular catalyst is highly dependent on its zirconium content. The starting material for this preparation is received in batches that assay between 68% and 84% ZrCl4. Routine analysis based on precipitation of AgCl is feasible, it having been established that there are no sources of chloride ion other than the ZrCl4 in the sample. What sample mass should be taken to ensure an AgCl precipitate that weighs at least 0.372 g? Mass of the sample =______ g If this sample mass is used, what is the maximum mass of AgCl that can be expected in this analysis? Mass of AgCl = _______ g To simplify calculations, what sample mass should be taken to have the percentage of ZrCl4 exceed the mass of AgCl produced by a factor of 100? Mass of the sample = _______ g
TypeFormulaKsp Solubility Product Constants (Ksp at 25 oC) TypeFormulaKspBromidesPbBr26.3 × 10-6AgBr3.3 × 10-13CarbonatesBaCO38.1 × 10-9CaCO33.8 × 10-9CoCO38.0 × 10-13CuCO32.5 × 10-10FeCO33.5 × 10-11PbCO31.5 × 10-13MgCO34.0 × 10-5MnCO31.8 × 10-11NiCO36.6 × 10-9Ag2CO38.1 × 10-12ZnCO31.5 × 10-11ChloridesPbCl21.7 × 10-5AgCl1.8 × 10-10ChromatesBaCrO42.0 × 10-10CaCrO47.1 × 10-4PbCrO41.8 × 10-14Ag2CrO49.0 × 10-12CyanidesNi(CN)23.0 × 10-23AgCN1.2 × 10-16Zn(CN)28.0 × 10-12FluoridesBaF21.7 × 10-6CaF23.9 × 10-11PbF23.7 × 10-8MgF26.4 × 10-9HydroxidesAgOH2.0 × 10-8Al(OH)31.9 × 10-33Ca(OH)27.9 × 10-6Cr(OH)36.7 × 10-31Co(OH)22.5 × 10-16Cu(OH)21.6 × 10-19Fe(OH)27.9 × 10-15Fe(OH)36.3 × 10-38Pb(OH)22.8 × 10-16Mg(OH)21.5 × 10-11Mn(OH)24.6 × 10-14Ni(OH)22.8 × 10-16Zn(OH)24.5 × 10-17IodidesPbI28.7 × 10-9AgI1.5 × 10-16OxalatesBaC2O41.1 × 10-7CaC2O42.3 × 10-9MgC2O48.6 × 10-5PhosphatesAlPO41.3 × 10-20Ba3(PO4)21.3 × 10-29Ca3(PO4)21.0 × 10-25CrPO42.4 × 10-23Pb3(PO4)23.0 × 10-44Ag3PO41.3 × 10-20Zn3(PO4)29.1 ×…