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Chromium metal can be electroplated from an acidic solution of (CrO4)-2 a.      Write the half reaction b.     Determine...

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Chemistry

Chromium metal can be electroplated from an acidic solution of(CrO4)-2

a.      Write the half reaction

b.     Determine the equivalent weight ofCr.

c.      What mass of Cr, in grams, willbe deposited by a current of 98.54 C?

d.     What mass of Cr, in grams, will bedeposited by a current of 3.0 amps passing for 4 minutes?

e.      How many minutes will it takefor 1.5 grams of Cr to be deposited by a current of 1.2 amps?

f.      How many Faradays ofelectricity are required to deposit 52 grams of Cr.?

Answer & Explanation Solved by verified expert
4.2 Ratings (860 Votes)
CrO42 oxidation state of Cr 6 CrO42 8H 6e Cr s 4H2O a half reaction CrO42 8H 6e Cr s 4H2O b equivalent weight molar mass 6 51996 6 8666 g c    See Answer
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