1. Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode onto a pure chromium cathode in an electrolytic cell. How many hours will it take to plate 15.5 kg15.5 kg of chromium onto the cathode if the current passed through the cell is held constant at 42.0 A42.0 A? Assume the chromium in the electrolytic solution is present as Cr3+Cr3+.

Q: Fe³+ (aq) | Fe(s) || Cl(aq) | Cl₂(g) | Pt 3+ Cl₂(g) | Cl(aq) | Pt || Fe(s)| Fe³+ (aq) 3+ Fe(s) |…

A: Lose of electrons is called Oxidation Gain of electrons is called Reduction

Q: The graph below shows the heating curve for some substance. The process starts at point 1,…

A: In this question, we have to answer which process occurs at the 4---->5 section of the Heating…

Q: How many protons are in a neutral atom of Ga? How many electrons? How many valence electrons?

A: Atomic number = number of protons For neutral atom, Number of electrons= number of protons Valence…

Q: 3Fe²(aq) → Fe(s) + 2Fe³+ (aq) 3Fe(s) + 2Cr³+ (aq) → 2Cr(s) + 3Fe²+ (aq) 3Sn¹+ (aq) + 2Cr(s) → 2Cr³+…

A:

Q: Which of the following statements is true regarding the picture below. 18 19 20 21

A: A burette is used to measure the volume of any solutions. b.

Q: Draw the skeletal ("line") structure of 2-chloro-6-methyloctane.

A: Given is, 2-chloro-6-methyl Octane  Asking is , skeletal or line structure of Given molecule?

Q: Assume that air consists of 80% N₂ and 20% O2 by mole. Under the STP conditions, what is the mass of…

A: One mole of gas contains 22.4 L  of volume at STP condition

Q: Find the number of moles and molecules from the following:  Avogadro's number is 6.022 x 1023…

A: Mole is equal to weight of substance divide by it's molar mass

Q: Italian salad dressing is a combination of oil, vinegar, herbs and spices. Why does one shake a…

A: Italian salad is prepared by mixing vinegar,herb, olive oil,spices etc.During the process the…

Q: For the following organic reaction identify the mystery reactant R, its stoichiometric coefficient…

A: In reaction when atom or group of atoms are added to form large molecules are said to be addition…

Q: Draw a skeletal ("line") structure of this molecule: CH3 CH₂ CH3 H₂N-C CH-CH₂-CH3 CH3 Click and drag…

A: In skeletal structure hetero atoms remain as such where as all CH, CH2,CH3 are represented by lines…

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 240. kJ during a…

A:

Q: You perform a titration on 10.50 mL of an HCl solution of unknown concentration. It requires 85.34…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: The accepted value for the enthalpy of vaporization of ethanol is 42.32 kJ mol−1. Calculate the…

A: Clausius-Clapeyron equation is lnpethPo=-∆HvapR×1T ∆Hvap = Enthalpy of Vaporization R is the gas…

Q: Check the box under each molecule in the table below that is an isomer of this molecule: i If there…

A: Different compound have same chemical formula but differ in the arrangement of atom.  Here we are…

Q: The following questions are associated with the dissolving of the ammonium nitrate in water:…

A: We have find out the answer. Note According to guidelines only one question solve .

Q: Complete the following reaction sequence, giving structural details of all key intermediates.…

A:

Q: Mechanism NO2 + Cl2 → NO₂Cl + Cl (slow) NO2 + Cl → NO₂Cl (fast) 2NO2 + Cl2 → 2NO2Cl (overall…

A: Rate law is always given by the slowest step of the reaction mechanism. Rate law must not include…

Q: Question 1 What are the listed hazards for 0.1N sodium hydroxide? Severe eye irritation. All of…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: What is the major product(s) in the following reaction? Ph Ph Br₂

A: In the given question, a reaction of alkene with Br2 is given and we have to find the product.

Q: What do you expect the temperature of the CMB to be when the Universe has expanded to 4.70 times its…

A: Since coupling, the expansion of the universe has reduced the color temperature of the background…

Q: can you show the expermiental r calculations in detail

A: To convert the units of pressure from mm Hg to atm, multiply the value in mm Hg with 1 atm760 mmHg.…

Q: Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free…

A: 1.In electrochemical cell at anode oxidation occure and at cathode reduction occure. 2. Reduction is…

Q: Draw the condensed structure of 2-methyloctane. Click anywhere to draw the first atom of your…

A: IUPAC nomenclature is used for naming the organic compound as recommended by international union of…

Q: Based on the information given, classify each of the pure substances as elements or compounds, or…

A: A question based on compounds. 11 substances are prescribed that are to be classified into element…

Q: E) CsH8 TIT 58 2 2.2 70 2.D 60 1.8 الله 1.5 40 1.4 30 1.2. 3 20 1.0 D.B 0

A:

Q: 2. Calculate the number of moles and grams from the following: (use correct sig figs in answer)…

A: The molar mass of atoms of an element is given by the standard relative atomic mass of the element…

Q: use the tabulated half cell potentials to calculate the equilibrium constant (K) for the following…

A:

Q: Calculate the pH of a 0.021 M NaCN solution. Ka(HCN) = 4.9 × 10–10

A: Given: Ka(HCN) = 4.9 × 10–10 We have to calculate the pH of a 0.021 M NaCN solution.

Q: 16- What product would you expect from the reaction of with NBS and water? What is NBS stands or?…

A: In this question, what is the product from the reaction of cyclopentene with NBS and water.

Q: A mixture of xenon and argon gas is compressed from a volume of 81.0 L to a volume of 69.0 L, while…

A: Mixture of two gases are compressed at constant pressure and we are asked to calculate the work done…

Q: Using the following bond enthalpies H-H Br-Br H-Br 436 kJ/mol 192 kJ/mol 368 kJ/mol calculate AH for…

A: Bond energy measure strength of bond

Q: A 400 mg sample of a 600 mg tablet is dissolved in 60 mL of 0.3 M H2SO4 and combined with 2 g of…

A:

Q: given the following rate law how does the rate of reaction change if the concentration of Y is…

A:

Q: increasing the pressure increasing the concentrations of reactants removing products as the reaction…

A: Adding a catalyst for the reaction The substance which alters the rate of the reaction without…

Q: in a different experiment it is observed that 332 cal of heat is absorbed as the temperature of 58.2…

A: This is a simple problem of thermal equilibrium where we have to find out the specific heat capacity…

Q: Above what temperature does the followin reaction become se non spontaneous? Fe0(s) + CO (9)→ CO₂(g)…

A: A reaction with negative Gibbs free energy(∆G) change is spontaneous. A reaction with positive Gibbs…

Q: 1.) For the following chemical reaction:       KClO3(s)   ----->  KCl(s)  +  O2(g)     a. Balance…

A: As per bartleby guidelines i answered only first question so please don't mind and post other…

Q: all of these are characteristics of a spontaneous reaction AG 1 AE cell 0 none of these are…

A: A spontaneous reaction is a kind of reaction that can occur by itself, i.e without any external…

Q: The H+ Molarity of a 0.0150 M HNO3(aq) is estimated to be Note that HNO3 is a strong acid. A. 0.010…

A:

Q: 3. 3-methyl cyclopentane 4.2-2-ethyl-3-methyl-2-hexene

A: Hybridization : If no of l.p. + Sigma bonds around C are 4, 3 and 2 respectively then their…

Q: Write the systematic name of each organic molecule: structure CH₂ CH₂-CH₂-CH₂-CH-CH-CH₂ CH₂ CI CH₂…

A:

Q: 8. In the boxes to the right of each compound indicate the number of signals (NOT PEAKS) that you…

A: Number of signals in 13C NMR and 1H NMR is the number of chemically different carbons and protons…

Q: H3C. H3C Reagent 6 O: H H Reagent 7

A: The forward reaction involves the reaction of aldehyde with diol to form acetal and backward process…

Q: Using any method of your choosing, balance the reaction: __ Ag3N + 0₂ → -- Ag₂O NO₂ When the…

A:

Q: Consider the specific heats of copper, iron, gold, and aluminum, given in the table Substance…

A:

Q: Match the following IR spectrum with the correct molecule. 100 TRANSMITTANCE [%] a b. C. 4000…

A: IR spectroscopy is used to determine the functional groups found in the molecule .

Q: Reaction FeCl₂ (aq) + Na₂S (aq) 2HgO (s) - Cl₂(g) + 2KI (aq) 2NaCl(aq) + FeS (s) 2Hg (1) + O₂(g)…

A:

Q: What is the percent by mass of Nitrogen in hexamidine? Molecular formula: C20H26N402. 9.3% 7.7% 33%…

A: Percent by mass of any atom in a molecule is defined by the following formula : Mass % =( mass of…

Q: Predict whether the following salts will form a solution that is acidic, basic, or neutral when…

A: The information given is Kb (NH3) = 1.78 × 10–5, Ka (HClO) = 3.98 × 10–8  The salts given are a)…

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.