chapter 23 - the transition metals

Question 1

State three characteristic features of chemistry of Vanadium and it’s compounds

Answer 1

it has variable oxidation states
it can form colored complexes
It can act as a catalyst

Question 2

What is a Lewis base

Answer 2

an electron pair donor

Question 3

What is a Lewis acid

Answer 3

an electron pair acceptor

Question 4

Why can transition metals form colored complexes

Answer 4

electrons get excited and move to a higher energy level/orbital

The electrons can absorb UV light/white light

The colors that are reflected[Solids]/transmitted[Solutions] are seen

Question 5

Suggest one reason other than color why potassium dichromate is unfavorable in drinking water

Answer 5

it has a foul smell

Question 6

Explain why transition metals that adsorb weakly are not good catalysts

Answer 6

The reactants aren’t brought together as well

there is not much of an increase of the reactant on the surface of the catalyst

The reactants are not held long enough for the reaction to occur

The reactants bonds aren’t weakened