3cu²⁺ + 2cr → 2cr³⁺ + 3cu in the voltaic cell above, which letter represents the cathode half - cell? enter…
3cu²⁺ + 2cr → 2cr³⁺ + 3cu in the voltaic cell above, which letter represents the cathode half - cell? enter the answer choice letter.
Answer
Brief Explanations:
In a voltaic cell, the cathode is where reduction occurs. From the reaction (3\text{Cu}^{2+}+2\text{Cr}\rightarrow2\text{Cr}^{3+}+3\text{Cu}), (\text{Cu}^{2+}) gains electrons (is reduced) to form (\text{Cu}). The half - cell with (\text{Cu}/\text{Cu}^{2+}) is where this reduction happens, and that half - cell is labeled A.
Answer:
A