1) How many grams of chromium would be electroplated by passing a constant current of 5.2...

1) How many grams of chromium would be electroplated by passing a constant current of 5.2 amperes through a solution containing CrCl₃ for 45.0 min?
A. 9.3 x 10^–4 g
B. 0.042 g
C. 2.5 g
D. 24 g
E. 2.3 x 10¹⁰ g

2) Which one of the following reactions must be carried out in an electrolytic cell rather than in a galvanic cell?
A. 3Ni²⁺(aq) + 2Cr(s) → 3Ni(s) + 2Cr³⁺(aq)

B. 2Ag⁺(aq) + Pb(s) → 2Ag(s) + Pb²⁺(aq)
C. Br₂(l) + 2Cu⁺(aq) → 2Br^–(aq) + Cu²⁺(aq)
D. Cr³⁺(aq) + 3Ag(s) → Cr + 3Ag⁺(aq)
E. 2Fe³⁺(aq) + Sn(s) → 2Fe²⁺(aq) + Sn²⁺(aq)

Solutions

Expert Solution

queen_honey_blossom answered 2 years ago

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