On what principle is the method of zone refining of metals based?

Q: A current of 10.0 amperes flows for 2.00 hours through an electrolytic cell containing a molten salt…

A: According to the reaction given, we have  Xn+ (aq) + ne-→X (s) t=2 hours=7200 sec (since 1 hr =3600…

Q: What allotrope of carbon is used to reduce iron ore? O Coke

A: Solution: We know iorn ore is a mixture of hematite (Fe2O3) and magnetite (Fe3O4). So the iorn is…

Q: A 0.5962 g sample of iron ore is dissolved in perchloric acid (HClO4 ). All iron present is oxidized…

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Q: A 0.8040-g sample of an iron ore is dissolved in acid. The iron is then reduced to Fe21 and titrated…

A: Initially from the given balanced equation  Mole ratio is found and then moles of Fe and Fe2O3 are…

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

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Q: Select the best oxidizing agent based on the standard reduction potential for the species shown. O…

A: In the electrochemical cell, the chemical energy is converted into electrical energy.The addition of…

Q: Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode…

A: Given: mass of chromium=10.5 kg, current= 39. amp. To find: Required time for electrolysis of…

Q: 3.53 L of 0.362 M  solution are electrolyzed (Cu is plated out of solution as metal.) A current of…

A: NOTE: Assuming that the solution contains Cu2+ ions and the concentration data given is for the Cu2+…

Q: The oxidation number of platinum in Pt(H2O)4 ^+2 is

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Q: The dilute sulfuric acid solution is electrolyzed with platinum electrodes with a current of 1.25 A…

A: Volume of gases evolved can be calculated from the moles of gases evolved..

Q: (ii) The thermite reaction can be used to join railway tracks together. Aluminium is used in this…

A: Definition of redox reaction is, In redox reaction one species is oxidize and other is reduced.

Q: Calculate the number of kilowatt-hours

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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: the mass of Al that will be produced

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Q: How many seconds are required to produce 7.00 g of Osmium metal from the electrolysis of molten…

A: Let S seconds requiredcoulombs generated by 16 A in S seconds Use Faraday's Constant, F (96485 C/…

Q: What volume of CL2 at 1 atm, 25 Co would be produced from the electrolysis of molten NaCl for 10…

A: Quantity of electricity can be calculated using the relation: Q = i × t Q = 7 Amps × 10 hr Q = 7…

Q: Mass determination by electroplating. What mass of copper metal is deposited if a 5.12 A current is…

A: Electrolysis is a process in which the chemical energy is converted to electrical energy. The amount…

Q: What mass of gold is produced when 16.8 AA of current are passed through a gold solution for 10.0…

A: This question is based of Faraday first law of electrolysis. Given: Current= i = 16.8A Time= t = 10…

Q: How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0…

A: Given: Current, I = 30.0 A Time, t = 10.0 hrs = 10×60×60 s = 36,000 sCharge supplied, Q = I.t Q =…