Choose the correct answer for each question.
When the equation
2MnO4 - + x H+ + y Sn2+ = y Sn4+ + 2Mn2+ + x/2 H2O
is balanced, y equals
Iodide ions react with iodate ions in acid solution according to the following equation:
5I- + IO3- + 6H+ = 3I2 + 3H2O
Which statement about this reaction is correct?
In which one of the following reactions is the acid acting as an oxidant?
Which one of the following equations shows hydrogen peroxide behaving as a reducing agent?
Potassium permanganate has the formula KMnO4.
What are the oxidation numbers of potassium and manganese?
| potassium | manganese |
+1 | +7 |
+4 | +4 |
+1 | +6 |
+1 | +3 |
Which one of the following conversions is an oxidation?