In the presence of dilute H₂SO₄, K₂Cr₂O₇ is reduced to Cr₂(SO₄)₃. What is the valency of Cr in K₂Cr₂O₇ and its equivalent weight?

University of Ilorin CHM107 2023B past question

1. 98
2. 49
3. 294
4. 147

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