17A.6

Question 1

what is monodentate ligand

Answer 1

a molecule or an ion that forms one dative bond with a mental ion

Question 2

what is a bidentate ligand

Answer 2

a molecule or an ion that forms two dative bond with a mental ion

Question 3

what is a multidentate ligand

Answer 3

a molecule or an ion that forms several dative bond with a mental ion

Question 4

what is a hexadentate ligand

Answer 4

a molecule or an ion that forms six dative bond with a mental ion

Question 5

what is the most common bidentate used

Answer 5

1,2 - animoethane

Question 6

if a molecule has two lone pairs is it possible not for it to be a bidentate

Answer 6

yes as it might not be able to bend to the right shape to from to dative bonds N2H4 (hydrazine)

Question 7

how can 1,2 aminoethane be abbreviated

Answer 7

as en so [Ni(en)3]^2+

Question 8

how does the en complex look like with Ni

Answer 8

page 196

Question 9

how is EDTA^-4 formed

Answer 9

take 1,2 - aminoethane replace each of the 4 hydrogens attached to the nitrogen with a CH2COOH and then we lose a hydrogen from each of H to form the CH2COO^-

Question 10

what is the structure of EDTA^-4

Answer 10

page 197

Question 11

what is EDTA^-4

Answer 11

hexadentate ligand

Question 12

when ligand displacement in complexes occurs with a ligand that forms less bonds (in the complex) being replaced with a ligand that can form more coordinate bonds what happens to stability

Answer 12

the stability increase as we would go from a less number of moles on the reactant side to a more number of moles on the product side so more disorder more E system and more likely a product can form

Question 13

how does the haemoglobin structure transport oxygen around the body

Answer 13

Hemoglobin is made up of 3 main parts with the biggest part being its protein (globin) their are four haem groups within the protein that are made up of mostly carbon and hydrogen, inside each of the haem group their is a Fe^2 attached to 4 nitrogen atoms by dative bonds in a square planar structure, additionally their is a fifth dative bond with the globin, when oxygen passes through by the blood stream the O2 would join the Fe^2+ and it would act as a ligand with one of its lone pair forming a dative bond, then it will be transported to the cells and released there

Question 14

why is carbon monoxide named the silent killer

Answer 14

because it has a lone pair of electrons and act as a ligand and can form a stronger complex with haemoglobin than oxygen can has oxygen complex is reversible so with carboxyhaemoglobin forming no oxygen will be transported to the body