For the oxidation-reduction reaction equation given here,

Question

2Rb+Br2 --> 2RbBr

Indicate how many electrons are transferred in the formation of one formula unit of product.

Answer 1

Rb ==> Rb^+ + e
1 mol RbBr contains 1 mol Rb metal which undergoes 1 e per atom change; therefore, 1 mole of electrons is changed for 1 mol RbBr. 1 mol electrons = 6.022E23 individual electrons.