Cr20, + 14H* (aq) + 12e¯ → 2Cr(s) + 7H20 (aq) a) How many hours would it take to completely convert 215mL of 1.25M K2Cr2O7 to elemental chromium? b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

Q: What is the oxidation number of O in KMnO4 (OR K Mn O4)?

A: Given  Molecule  =  KMnO4 Oxidation number of O = ?

Q: Calculate the current intensity necessary to decompose all the sodium chloride contained in 600 ml…

A:

Q: 4 Laundry bleach such as Clorox is a dilute solution of so- dium hypochlorite, NaOCI. Write a…

A: In the given question we have to write the balance net ionic equation,  the reaction between NaOCl…

Q: A sample of steel was dissolved and the manganese present was converted to MnO4– (aq). Water was…

A: Given, Absorbance = 0.560 Path length = 1 cm Molar absorptivity = 3.62*103 L/(mol cm) Concentration…

Q: A steel sheet will have a thin layer of zinc put on one side to protect it from corrosion.…

A: The total charge passed through the solution was Q= It Q= It Q = 2 A ×30×60 Q =3600 C Zn+2 + 2e_  →…

Q: What is the net ionic equation for the reaction of AgNO3(aq) with K2SO4(aq). Include phases.

A: The net ionic equation shows only the chemical species that are involved in a reaction, while the…

Q: Purification of nickel can be achieved by electrorefining nickel from an impure nickel anode onto a…

A: This is a problem of electrochemistry.It is basically a study of the chemical processes that cause…

Q: A sample of steel was dissolved and the manganese present was converted to MnO4– (aq). Water was…

A:

Q: What are the oxidation numbers of aluminum in Al(s) and Al2O3

A:

Q: How many liters of chlorine gas at 1.68 atm and 28°C can be produced by the reaction of 8.91 moles…

A:

Q: What is the oxidation number of K in KMnO4 (OR K Mn O4)?

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we…

Q: What is the oxidation number of manganese in MnO2?

A: Answer: Formal charge present on an atom in a molecule is called as its oxidation number. It can be…

Q: A 0.4560 g mixture of FeCl3 and FeBr3 was dissolved in water and reacted with excess NaOH. All of…

A: The balanced chemical equation for the reaction is: (FeCl3+FeBr3) (aq)+3NaOH(aq)-> Fe(OH)3(s) + 3…

Q: How much current is required to electroplate a metal surface with 0.493 g nickel metal from a…

A:

Q: A certain single ion channel is selectively permeable to K* and has a resistance of 1.15 G2,…

A: the answer is follows as :

Q: Balance each disproportionation reaction occurring in acidic solution. a)Sn2+(aq)→Sn(s)+Sn4+(aq)…

A: Answer:- This question is answered by using the simple concept of balancing the disproportionation…

Q: Consider the following reaction: Sn4+ (aq) + Cu (s) → Sn2+ (aq) + Cu²+ (aq) Which of the following…

A: in a redox reaction , a species that loose electron, getting oxidised where other species that gain…

Q: A sample of steel was dissolved and the manganese present was converted to MnO4– (aq). Water was…

A: From Beer-Lamberts law, A = ∈C l where A = absorbance of the substance = 0.560 ∈  = molar…

Q: How many amps are required to produce 59.6 g of aluminum metal from a sample of molten aluminum…

A: AlF3 ----> Al3+ + 3F- Al3+ + 3e- ----> Al(s) Therefore, It requires 3 moles of electrons to…

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.