Identify the two “active species” in each of the following buffer systems. a. HF and LiF b. Na2HPO4 and KH2PO4 c. K2CO3 and KHCO3 d. NaNO2 and HNO2

Q: 1. For the reaction at 20°C, NH3(aq) + H+ (aq) = NH+ (aq) the equilibrium constant is calculated to…

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Q: Calculate the cell potential for the galvanic cell in which the reaction Ti(s) + Co² (aq) Ti² (aq) +…

A: Cell potential of any complete cell can be measured by Nernst equation. This question will be solved…

Q: Determine the LFSE for octahedral ions from first principle and confirm the value matches those in…

A: Actually  in Octahedral complex, d orbital splits into t2g and eg states. For Octahedral complex,…

Q: 25.0 mL of 0.225 M  HNO2 is titrated to its equivalence point with 1.00 M  NaOH. What is the pH at…

A: Equivalence point is the point where the amount of titrant ( NaOH) added is enough to completely…

Q: Consider a galvanic electrochemical cell constructed using Cr/Cr³⁺ and Zn/Zn²⁺ at 25 °C. The…

A: Eocell = 0.019 V [Zn²⁺] = 0.0223 M [Cr³⁺] = 0.1636 M The given reaction is:…

Q: lime scale more likely to form on hot-water pipes

A: When hard water evaporates, it leaves behind a white, hard coating known as limescale, sometimes…

Q: What is the angular momentum quantum number for the electrons with the highest energy in a zirconium…

A: The angular momentum quantum number for the electrons with the highest energy in zirconium atom…

Q: Questions 15-20 refer to the same weak base/strong acid (WB/SA) titration. The K, of pyridine is 1.7…

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Q: 7. Comparing the equation for your line to the equation AG = -AS-T + AH. a. Solve for the value of…

A: Question: 8 As per given information on enthalpy and entropy  ∆S°=315.48 Jmol.K∆H°=110399 JmolT=298K

Q: Questions 11-14 refer to the same strong base/strong acid (SB/SA) titration. A 15.00 mL solution of…

A: The question is based on the titrations.  we are titrating a strong acid with a strong base. we need…

Q: The formula H₂SO4 + 2 KOH-> K2SO4 + 2 H₂O describes the reaction between sulfuric acid and potassium…

A: Answer: This question is based on acid-base titration where base is the analyte and acid is the…

Q: h) j) - -CN -CN O-CH3 1) CH3MgBr (2 equiv.) 2) H3O+ 1) CH3MgBr 2) H3O+ 1) LiAlH4 2) H₂O

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Q: a) b) H3C C. O O O O O OEt OEt H NaOEt EtOH + Br NaOH H₂O Br O EtO OEt O NaOEt EtOH O I `H H. I CH3…

A: All are mechanism based. Detail mechanistic pathway is given below

Q: NH₂ HO HO

A: When 3 degree alcohol oxidized in presence of PCC / CH2Cl2 it converts into ketone

Q: a) b) Fill in the reagents above/below the arrow in the following reactions. c) CN d) CO₂H LỊCH OH…

A: The different sets of reagents lead to the formation of different products from the same starting…

Q: Analyze the CNMR for the molecular formula C8H8O3 (vanillin). Propose a table with chemical shift…

A: The 13 CNMR for molecular formula C8H8O3 (vanillin) has Chemical shift values due to presence of…

Q: Draw the major organic product of the reaction. Indicate the stereochemistry via wedge-and-dash…

A: The bimolecular nucleophilic substitution reaction is a concerted reaction that occurs in a single…

Q: 2 3 4 Questions 1-4 refer to the same strong acid/strong base (SA/SB) titration. A 25.00 mL solution…

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Q: Calculate the pH at the equivalence point for the following titration: 0.20 M HCl versus 0.20 M…

A: The given titration is an example of titration of weak base (CH3NH2) and strong acid (HCl), so, at…

Q: 1. Draw one of the five possible products of an aldol condensation (using 2:1 aldehyde R₁-CHO to…

A: Aldol Condensation is an organic reaction where a aldehyde or ketone ( which contain keto-methyl…

Q: Identify the frequency of both carbonyl stretches in your IR. Which one corresponds to the benzyl…

A: When a continuous change is observed in the interatomic distance, along the axis of a bond, present…

Q: 2. Silicon nitride is a very hard, high-temperature-resistant ceramic used as a component of turbine…

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Q: A medical technician is working with the four samples of radionuclides listed in the table below.…

A: We have to arrange the given radionuclide according to initial radioactivity and calculate the time…

Q: Br CH3 H3C Br

A: The given compounds are We have to identify the relationship between them.

Q: For each of the following complex ions: a) [Ni(SCN)2(H₂O)2] b) [Mn(acac)2Br2]²- (i) (ii) (iii) (iv)…

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Q: Why do ketones not answer to base catalyzed aldol condensation like aldehyde?

A: In this answer, we discussed why ketones have lower reactivity compared to aldehydes in…

Q: Consider the reaction CH₂(g) + H₂O(g) 3H₂(g) + CO(g) Using the standard thermodynamic data in the…

A: In the multiple questions, we solve only first question according to the Bartleby guidelines. If you…

Q: What is the solubility of PbCl₂ in 0.020 M NaCl? Ksp = 1.59 x 10-5 Keep 3 total significant figures.

A: The question is based on the concept of solubility product principle.  It that states that when a…

Q: Consider the pair of reactions. Draw the organic products, then predict the type of substitution…

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Q: 55. What is the correct IUPAC name for the alcohol whose structural formula is: CH3-CH-CH-CH3 CH3 OH…

A: IUPAC (International Union for Pure and Applied Chemistry) nomenclature gave the rules for naming…

Q: The nucleophilic reaction between phenyl a-disulfone and hydrazine occurs according to the following…

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Q: Baking soda decomposes when heated according to the following equation: 2NaHCO3 + 129 kJ ==> Na2CO3…

A: An EXOTHERMIC thermochemical reaction equation is written as  Reactants ------> products + Heat…

Q: 1a. Write out the reaction for acetic acid (CH3COOH) and water. 1b. Calculate the pH of a 0.15 M…

A: Answer: pH basically tells us about the power of hydronium ion concentration. Higher the…

Q: A 1.00 L solution contains 17.52 g of nitrous acid, HNO₂. What mass of sodium nitrite, NaNO2, should…

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Q: 1. A solution has a pH of 5.50. a. What is the pOH of this solution? b. Is the solution acidic,…

A: pH = 5.50 pOH = ? Nature of  solution =?

Q: Questions 5-10 refer to the same weak acid/strong base (WA/SB) titration. The K₂ of hypobromous acid…

A: The question is based on the concept of pH of the solution.  it is defined as a negative logarithm…

Q: Use the half-reaction method to balance each of the following in acidic solution:…

A: we have to determine the balanced equation for the given reactions in acidic medium

Q: QUESTION 3 Determine the mechanism of reaction that will take place: H₂C- CH3 NaOH C-CH3 SN1 E1 E2…

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Q: + 2

A: The given reaction is Fridel-Craft acylation reaction.

Q: 8. What is the product of the following reaction? (1) (2) (3) (4) OH it OH OH OH OCH 3 H CrO3 H₂SO4…

A: The given reaction is an example of the oxidation of aldehyde to give corresponding carboxylic acid.…

Q: OE+ Claisen condensation

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Q: Write the formula of the compound that forms when aqueous solutions of strontium nitrate and…

A: When strontium nitrate and sulfuric acid are mixed then it results in a chemical reaction which…

Q: What are the reagents?

A: Product of reaction 'a' can be achieved by two steps.  For reaction b, it requires total two steps.…

Q: Determine the pH of a buffer solution by constructing an ICE table, writing the equilibrium constant…

A: Answer: Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: Questions 15-20 refer to the same weak base/strong acid (WB/SA) titration. The Kü of pyridine is 1.7…

A: Answer:- This question is answered by using the simple concept of calculation of pH at equivalence…

Q: Consider the following equilibrium: 2NH3(g) N₂(g) + 3H₂ (g) AG= 34. KJ reaction vessel is filled…

A: Answer: Below shown relation between standard Gibbs free energy change and equilibrium constant will…

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

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Q: Draw the product formed when the structure shown below undergoes a reaction with Br₂ in CCI4.…

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Q: Explain why the nitrogen in an amide is not a good nucleophile. Use a picture to show why

A: We need to prove that why the nitrogen atom in amide is not good nucleophile.

Q: Write the net ionic equation for the following reaction and identify the substance that is oxidized…

A: Oxidation = loss of electrons hence increaseing the possive change Reduction= gain of electrons…