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प्रश्न
Suggest a list of metals that are extracted electrolytically.
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उत्तर
Metals at the top of the reactivity series, such as sodium, potassium, calcium, lithium, magnesium and aluminium, are extracted electrolytically.
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संबंधित प्रश्न
Number of faradays of electricity required to liberate 12 g of hydrogen is:
Using the E° values of A and B, predict which is better for coating the surface of iron [E°(Fe+2/Fe) = -0.44V] to prevent corrosion and why?
Given: E° (A+2/A)=-2.37 V: E°(B+2/B)= -0.14V
If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?
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What is the quantity of electricity in coulombs needed to reduce 1 mol of \[\ce{Cr2O^{2-}_7}\]?
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(A) 1 : 2
(B) 2 : 1
(C) 1 : 8
(D) 8 : 1
Following reactions occur at cathode during the electrolysis of aqueous copper(II) chloride solution :
On the basis of their standard reduction electrode potential (E°) values, which reaction is feasible at the cathode and why ?
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Consider the figure and answer the following question.
Cell ‘A’ has ECell = 2V and Cell ‘B’ has ECell = 1.1V which of the two cells ‘A’ or ‘B’ will act as an electrolytic cell. Which electrode reactions will occur in this cell?
Through an aqueous solution of an unknown salt of metal M (M = 200 g/mol) a current of 1.93 A is passed for 50 min. If 4 g of metal is produced at cathode. The charge on metal ion in solution is ______.
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Select the most appropriate answer from the options given below:
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