Oxidation Question....?

Question

1)What does it mean when chemists say that a reactant is reduced?

2)what does it mean when chemists say that a reactant is a reducing agent?

3)Is francuim likely to be reduce in a chem. reaction?would it be easy or difficult to separate francium ores?Explain.

Oxidation or Reduction?
1)Na--> Na+ +e-
2)Cl + e- --> Cl-

Answer 1

1) The reactant gains electrons; or the oxidation number of an element in the reactant decreases.

2) The reactant donates electrons to the species being reduced; or the oxidation number of an element in the reactant increases, while causing a reduction in the oxidation number of the reduced species.

3) Francium would have to gain an electron to become Fr-, which is unlikely, because Fr is the most metallic, least electronegative element in the Periodic Table. It would be hard to isolate Fr from ores, because the ores would be salts of Fr+. As the most reactive metal known, Fr would be most resistant to reduction to Fr metal.

1) Oxidation
2) Reduction

Answer 2

1.when a reactant is reduced that means that electrons are gained.
2.reduction:
a gain in hydrogen atoms
b loss in oxygen atoms
it depends on whether a reactant is gaining or losing oxygen

3.francium is likely to oxidise in a chem. rxn.Its easy to seperate francium ores.

1)reduction
2oxidation

Answer 3

1) That means it gain electron

1) Oxidation
2) Reduction

Answer 4

reduced is when a molecule gains an electron

Answer 5

This stuff should be in your book.