Chemistry Past Questions and Answers

Use the diagram above to answer this question. The reaction taking place in flask G is known as

MnO4(aq) + 8H + 5Fe2+ \(\to\) Mn2+(aq) + 5Fe3+(aq) + H2O. The oxidation number of maganese in the above reaction changed from

which of these metals CANNOT replace hydrogen from alkaline solutions?

Clothes should be properly rinsed with water after bleaching because

When sodium ethanoate is treated with a few drops of concentrated tetraoxosulphate(vi)acid. one of the products is