Haleogen Displacment Reactions Flashcards
What is shown by looking at displacement reactions?
the Group 7 elements decreases in reactivity as you move down the group.
What happens in a displacement reaction
When a more reactive halogen displaces a less reactive halogen from a solution of one of its salts.
Example equation for displacement reaction
chlorine + sodium bromide → sodium chloride + bromine
Cl2(aq) + 2NaBr(aq) → 2NaCl(aq) + Br2(aq)
How do you find the reactivity deities in group 7
test different combinations of the halogens and their salts
What is the reactivity series in group 7
the most reactive halogen displaces all of the other halogens from solutions of their salts,
the least reactive halogen displaces none of the others
What are redox reactions?
Redox reactions involve both oxidation and reduction
What does oxidation and reduction mean?
Oxidation - loss of electrons
Reduction - gain of electrons
Why are halogen displacement reactions redox reactions?
halogens gain electrons and the halide ions lose electrons.
