Potassium ferrate, K2FeO4\text{K}_2\text{FeO}_4K2FeO4, is a powerful oxidising agent used in wastewater treatment. What is the oxidation number of iron (Fe\text{Fe}Fe) in K2FeO4\text{K}_2\text{FeO}_4K2FeO4?
A
+3+3+3
B
+6+6+6
C
+4+4+4
D
+2+2+2
Markscheme
Redox Questions
26 exam-style questions on OCR A A Level Chemistry Redox. Each one has a worked solution and a mark scheme showing where the marks go.