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Part A: How many coulombs are required to plate a layer of chromium metal 0.24 mm thick...

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Chemistry

Part A:

How many coulombs are required to plate a layer of chromiummetal 0.24 mm thick on an auto bumper with a total area of 0.29 m2from a solution containing CrO2−4? The density of chromium metal is7.20 g/cm3. Express your answer using two significant figures. Q =______ C

Part B:

What current flow is required for this electroplating if thebumper is to be plated in 16.8 s ? Express your answer using twosignificant figures.

Answer & Explanation Solved by verified expert
3.6 Ratings (321 Votes)
A Thickness h 024 mm 024 x 103 m Total area A 029 m2 Volume A X h 029 m2 x 024 x 103 m 00696 x 103 m3 1 m3 106 cm3 00696 x 103 x 106 cm3 696 cm3 Density 720 gcm3 massvolume Mass of chromium metal Volume x density    See Answer
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