15. A voltaic cell utilizes the following reaction: 4Fe2+(aq)+O2(g)+4H+(aq)→4Fe3+(aq)+2H2O(l) THE E∘cell = 0.46 V What is the emf of this cell when [Fe2+]= 2.0 M , [Fe3+]= 1.9×10−2 M , PO2= 0.42 atm , and the pH of the solution in the cathode compartment is 3.6? Express your answer in volts using two significant figures.

Q: What quantity of moles of C are formed upon complete reaction of 2 mol of B according to the generic…

A: Given ;-  A + 2 B → C  Number of moles of B reacts = 2 mol  To calculate :-  Number of moles of C…

Q: In a study of the gas phase decomposition of phosphine at 120 °C PH3(g) 1/4 P4(9) + 3/2 H2(g) the…

A:

Q: 8. Balance the follow NH3(g) + F2(g) → Nz

A: Balanced  reaction is   2 NH3(g)  +  3 F2(g)    -->   N2F4(g)  +  6HF(g)   2mol           3mol…

Q: use this equation Ba(NO3)2 + Na2SO4 = BaSO4 + 2 NaNO3 How many grams of precipitate will form…

A:

Q: What is the oxidizing agent in the (unbalanced) reaction? Cu(s) + H*(aq) + NO3 (aq) → NO(g) + H2O()…

A:

Q: Ponatinib HCI, an antitumor drug: N. H F This molecule is missing sixteen lone pairs. Add them to…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: Complete and balance the following equation: NO2-(aq)+ Cr2O72-(aq)→ Cr3+(aq)+NO3-(aq)

A: NOTE: In the reactant, it will be NO2- and not NO2- and in the product, it will be NO3- and not…

Q: The concentration of hydrogen peroxide decreases from O. 1 mol/L to 0.05 mol/L in 900 s at 240C on…

A: a ) Half life is defined as the time required to reduce the concentration of a substance to half .…

Q: Ser His O Asp Lys

A: According to the question, we need to determine which amino acid is NOT capable using its side chain…

Q: ght given off by a tungsten filament amma decay uclear fission in nuclear reactors

A:

Q: Kp for the reaction 4CUO(s) = 2Cu20(s) + O2(g) Is 0.49 at 1024 °C. Calculate Kc at this temperature

A: Given :- 4CuO(s) <-----> 2Cu2O(s) + O2(g)  Kp = 0.49  T = 1024°C  To calculate :- value of Kc…

Q: Epinephrine contains the __ group that is absent in norepinephrine. The donor of this group is…

A: epinephrine: It another name is adrenaline, this is a hormone that is secreted mainly by the medulla…

Q: Use systematic treatment of equilibrium to calculate the molar solubility of AgIO3 in an aqueous…

A: Solution to the question is given below ?

Q: A micropipette was used to draw 450 microliters of solvent X and when measured using an analytical…

A:

Q: use this equation 2 Al + 6 HCl = 2 AlCl3 + 3 H2 How many grams of aluminum are required to react…

A: The balanced reaction taking place is given as, => 2 Al + 6 HCl → 2 AlCl3 + 3 H2  Given:…

Q: Question 18 Calculate the standard cell potential, E°cal, for the voltaic cell based on the…

A:

Q: 2. If the standard enthalpy change, (AH°) and the standard entropy change, (AS°) for the dissolution…

A:

Q: A completely made up compound of fluoride, XCl2, is found to have a molar solubility of 8.31 x…

A: Given :  Concentration of AlCl3 = 2.43 M  Molar solubility of XCl2 = 8.31 x 10-23 mol/L

Q: An ingredient of Tiger Balm salve is composed of C, H and O.  A 0.1005 g sample of the ingredient is…

A: Given :  Weight of sample = 0.1005 g  Weight of CO2 produced = 0.2829 g  Weight of H2O produced =…

Q: Lab para-iodo nitrobenzene Why is this method (iodination via diazonium salt method)  considered…

A: The diazonium salt method is used for the iodination of the nitrobenzene, i.e, for the synthesis of…

Q: Radioactive decay is measured in terms of "half-life", which is the number of years required for…

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

Q: Part C A sample of neon initially has a volume of 2.50 L at 20. °C. What final temperature, in…

A: Charle's law

Q: What is the theoretical amount of H2 that can be produced by the reaction between 3.23 g of Ca and…

A: Given Ca = 3.23 gram and water is 2.33 gram

Q: Which of the following would be the correct equation for determining the number of moles of H2SO4…

A: Choose the correct expression --;

Q: How will the system respond to an increase in the amount of S? S(s) + 0,(g) = SO,(g) AH < 0 Select…

A:

Q: An unknown element X- forms a coordinate compound in the presence of Cl-, XCl2. If 1.66 moles of X+…

A: Given: Initial moles of X7+ = 1.66 mol. Initial moles of Cl- = 15.5 mol. Volume of solution = 4.32 L…

Q: Write a balanced half-reaction describing the oxidation of aqueous vanadium(I) cations to aqueous…

A:

Q: Name the alkyne. S

A:

Q: Construct the expression for Ka for the weak acid, CH,COOH. CH,COOH(aq) + H,O(1) = H,O*(aq) +…

A: Given data :

Q: Calculate for the mass of Boric acid required to prepare 250ml of 2 M solution.

A:

Q: Calculate the mass of CaCO3 (MM = 100.0 mg/mmol) produces from heating 400.0 mg of CaC2O4•H2O (MM =…

A: Concept: heating an oxosalato salt of group-2 metal form corresponding carbonate of the metal and if…

Q: Use the standard reduction potentials located in the 'Tables' linked above to calculate the standard…

A: For a electrochemical cell E⁰cell Can be calculated by using the following formula:  E⁰cell = E⁰red…

Q: In the laboratory, a general chemistry student measured the pH of a 0.544M aqueous solution of…

A: Given :-  Initial concentration of aqueous solution of acetic acid = 0.544 M  pH of solution = 2.488…

Q: Complete the following synthesis schemes. Some may take more than one step and some may have several…

A:

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HC1(g) AH = -184.6 kJ Reaction 2: 20F2 (g)…

A: `Given the reaction: H2(g) + Cl2(g) → 2HCl(g) ∆H = -184.6 kJ We have to calculate the mass of…

Q: Which of the following aqueous solutions are good buffer systems? 0 0.33 M ammonia + 0.39 M sodium…

A: Since we know that, Weak acid/ weak base with its conjugate base/ conjugate acid makes a good buffer…

Q: If a urine sample has a pH of 5.50, calculate the concentrations of H3O+ and OH− in the sample.

A:

Q: What is the hybridization at each (sp, sp2, sp3) also find molecular geometry (bent, trigonal…

A:

Q: Determine the total number of sigma bonds and the total number of pi bonds in the compound below

A:

Q: Under which circumnstances is it appropriate to apply the pre-equilibrium approximation

A: It is asked in the question where to apply pre-equlibrium approximation.

Q: Which of the following combinations can be used to make a buffer? assume equal values are used A.…

A: For buffer solution : we take weak acid/ weak base and it's conjugate base / conjugate acid.....

Q: Consider the titration of 25.0 mL of 0.175 M CH3NH2 (Kb = 4.2 x 10-4) with 0.150 M HBr. Determine…

A: #(a): Initial pH: CH3NH2(aq) is a weak base and undergoes hydrolysis to form OH-(aq). Balanced…

Q: A Cr+ (aq) solution is electrolyzed using a current of 7.30 A. What mass of Cr(s) is plated out…

A: a) Given: Current passed = 7.30 A. And time passed = 2.90 day = 2.90 × 24 × 60 × 60 = 250560 s…

Q: Classify the given as direct, indirect, or back titration problems. A 50.00-mL sample of a citrus…

A:

Q: Oxygen gas and liquid ethanol react to form carbon dioxide gas and liquid water. If ethanol is…

A:

Q: When 2348 J of heat energy is added to 48.6 g of ethanol, C2H6O, the temperature increases by 19.7…

A: Molar heat capacity ( Cm ) :-  Cm = { q / n ∆T }  q is heat absorbed = 2348 J  Given mass = 48.6 g…

Q: The nuclide 93Np239 decays by emission of a negative electron. The daughter nucleus will have an…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: A chemist gathers 3924Kj from combusting 65g of ethane What is the deltaH of a 93% yield

A: Given the mass of ethane taken = 65 g  Experimental amount of heat released during combustion = 3924…

Q: Which of the following is a correct relationship between AG° and the equilibrium constant, K, for a…

A: Since you have posted multiple questions as per guidelines we can answer only one per session . If…

Q: Study this chemical reaction: Pb+O, - Pbo, Then, write balanced half-reactions describing the…

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.