7. What is Polarography? Which equation is used in Polarography? Draw a typical d.m.e.

Q: What is the concentration of CrO42- required (molarity) in a solution that is 0.002 M in Ba2* in…

A: Given: The Ksp of BaCrO4 = 8.16×10-11 The concentration of Ba2+ = 0.002 M We have to calculate the…

Q: 3. Based on the solubility rules in your textbook (Section 8.4), decide if each of the following…

A:

Q: Calculate the solubility at 25 °C of BaCrO, in pure water and in a 0.0100M BaCl, solution. You'll…

A:

Q: When 170. mg of a certain molecular compound X are dissolved in 50. g of benzene (CH), the freezing…

A: Given- Weight of X = 170 mg = 0.170 g (1 g = 1000 mg) Weight of benzene = 50 gm = 0.050 Kg (1Kg…

Q: Describe the mechanism of the following reaction. 1) H2N NH2 SH SH (excess) CO2H AcO 2) КОН 3) H+

A: Detail mechanistic pathway is given below

Q: Question 20 What is the product of the reaction of the vicinal dihalide shown below? H H fused KOH…

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Q: pH of pure water

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Q: twhich of the itermedited bteoo ड कळ्डी एळक्जे वनी मकट TMechवकांडण नि गीए गख्तंपरमीं ०1 ी एममसू…

A:

Q: NaH, THF 1. Ph3P. Br e 2. NaOH, H2O2, НаОТHF 3. Mezs I H. NaH, THF

A: In wittig reaction carbonyl group is converted into double bond. NaOH and H2O2 is used for…

Q: What is the final temperature of 100.0 g of zinc at 95°C put into 50.0g of water at 25°C.  Specific…

A: Given that,  The mass of water is mw = 50.0 g. The mass of zinc is mzn = 100.0 g. The temperature of…

Q: Be sure to answer all parts. Calculate the hydroxide ion concentrations of the following solutions…

A:

Q: ΔG° for the reaction

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Q: The hydrogen-oxygen fuel cell is described in the text. For the questions below, assume the…

A:

Q: #1 - Draw structures for the following compounds: A: (E)-5-ethyl-5-decene B:…

A:

Q: Which of the following would be expected to form hydrogen bonds with water? Choose all that apply.…

A: Hydrogen bonding is a bond between Hydrogen and highly electronegative atom , F , N , O .  To form…

Q: Question 14 Which of the following reagents can be used to achieve epoxidation of an alkene? O…

A: Given reagents: mercury acetate MCPBA (a peroxy acid) the Simmons Smith reagent (ICH2ZnI) methyl…

Q: A student titrates a weak acid and draws the titration curve. Suppose s/he forgets to subtract off…

A:

Q: What reagents are needed to carry out the conversion shown? NH2 A OH C D NH2 O KOH; H2/Pt; excess…

A: Carbonyl compound can be converted into amine compound in presence of NH3 and reducing agent (…

Q: A salt solution is to be added to a marine aquarium. Calculate the molarity of a salt solution that…

A: Given :-  Mass of NaCl = 18.65 g  Volume of solution = 250.0 mL  To calculate :-  Molarity of…

Q: A reaction has a positive entropy change. What would the sign of AHrxn need to be to make the…

A: Let us consider the equation for gibbs free energy  ΔG=ΔH−TΔS Where,δH is enthalpy change (KJmol −1)…

Q: Calculate deltaG for the reaction /, (02) = [O]Fewto at 1650 degrees Celsius. Given: (H2) + / (02)…

A:

Q: Aive the mechamism and misSing Greagents ? ome me

A: Step 1 : Birch reduction followed Robinson annulation ( see below).

Q: A galvanic (voltaic) cell consists of an inert platinum electrode in a solution containing 1.0 M…

A: Here we are required to find the standard cell potential of the voltaic  cell

Q: Question 7 Give the formula for a simple alkene (no rings). O C,H2n+2 O CH20 O C,H2n+4 O C,H2n-4 O…

A: General formulas: General formula for alkanes -  CnH2n+2 General formula for alkenes -  CnH2n…

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

A:

Q: Draw the Lewis structure of PF3 and Plg. Determine which statement best describes the Lewis acid or…

A:

Q: An analytical chemist is titrating 171.3 mL of a 0.5600M solution propylamine (CH,NH,) with a…

A: Given- Volume of  propylamine= 171.3mL  Concentration of propylamine= 0.5600M pKb of…

Q: Provide the appropriate reagents or product in the following reactions. CO,Me 10.

A: Note : Acid catalyzed trans esterification. Dehydration of alcohols. C-alkylation. ( see below).

Q: If you have a 74.0 mL solution of 0.160 M benzoic acid, C6H5 COOH, and it is being titrated with…

A: Given: Concentration of benzoic acid (Assuming HA) = 0.160 M Volume of HA solution = 74.0 mL = 0.074…

Q: What is the pHpH of a solution with [H3O+]=8.1×10−5[H3O+]=8.1×10−5 MM?   4.09 -9.42 -4.09 1.00

A: • The values provided in the question are:-       i) Hydronium ion concentration of a solution,…

Q: 1.Os04, TBHP, H20/THF 2. TSOH, acetone, PhH, heat 3. AICI3, CH3COCI, CH2CI2

A:

Q: Give the formula for a simple alkene (no rings). O C,H2n+2 O C,H2n O C,H2n+4 O C,H2n-4 O C,H2n-2

A: Alkene is a type of unsaturated hydrocarbon containing atleast one carbon-carbon double bond.

Q: Vincristine is a pharmaceutical used in chemotherapy and it is also a weak acid with a pKa=5.40. If…

A: We would first calculate Concentration of weak acid using moles and volume.  Then we consider weak…

Q: 1 3. 10 11 12 13 14 Calculate the pH at 25 °C of a 0.69M solution of potassium acetate (KCH,CO,).…

A:

Q: Which reagents will allow you to selectively achieve the following transformation: HO (and…

A:

Q: 1. Which of the following is the best primary standard for the standardization of NaOH? a. KHP b.…

A: (1) A main standard is a reagent that can be easily weighed and is sufficiently pure that it…

Q: It required 20.1 mL of an aqueous HCl solution to react completely with 0.1060 g Na₂CO, (105.99…

A: Given, Volume of HCl solution = 20.1 mL = 0.0201 L Mass of sodium carbonate (Na2CO3) = 0.1060 g…

Q: How long will it take to plate out 4.9 g Ni from aqueous Ni2+ with a current of 113.1 A?

A:

Q: A solution is prepared at 25 °C that is initially 0.29M in chloroacetic acid (HCH,CICO,), a weak…

A:

Q: 6. Classify the following salts as acidic/basic/pH neutral and write a hydrolysis equation for them…

A:

Q: Which reaction(s) will be spontaneous at all temperatures? Question 23 options: A) 4NH3(g) +…

A: The change in Gibbs free energy (∆G) is given by the relation ∆G = ∆H - T∆S  ∆H = change in enthalpy…

Q: CO,Me OMe Me

A: Reaction 1 : Acid catalyzed trans esterification. Dehydration of alcohols. C-alkylation. Reaction 2…

Q: The preparations of two aqueous solutions are described in the table below. For each solution, write…

A: Acids are able to give H+(aq) when dissolved in water. Bases are able to give OH-(aq) when dissolved…

Q: Calculate the molarity of a solution prepared by dissolving 5.845 g of sodium chloride (NaCl) in…

A:

Q: A 26.50 mL solution of Fe2+ required 17.50 mL of 0.175 M KMNO, to reach the end point. 5 Fe2 + (aq)…

A:

Q: 1. Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: The answer of the above mentioned question is shown below:

Q: 1. 50.05 mL of 0.4530 M KOH solution to completely to titrate 125.00 mL of sulfuric acid solution…

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

Q: A certain liquid X has a normal freezing point of 4.80 °C and a freezing point depression constant…

A:

Q: wing Synthes!s Br

A:

Q: What volume of each solution contains 0.340 molmol of NaINaI? A. 0.142 MM NaI B. 0.952 MM NaI C.…

A: Molarity: it can be define as the number of moles of solute dissolved in per litre of the solution.…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.