Uses Of TM

Question 1

Tm catalysts work by

Answer 1

Changing ox states

Question 2

Vanadium (V) oxide oxidises so2 to so3 and is

Answer 2

Reduced

Question 3

Reduced vanadium oxide is then ….by…..

Answer 3

Oxidised by oxygen back to it’s original state

Question 4

Het catalysts are in a different phase to reactants eg

Answer 4

Haber process

Contact process

Question 5

Impurities can poison het catalysts by…..eg….

Answer 5

Binding to catalyst surface and blocking reactants from being adsorbed and also red s.a and r.o.

Eg lead and catalytic converters

Question 6

Homogeneous catalysts are in the same phase as reactants and work by…eg…

Answer 6

Reactants form intermediate species which then react to form products and reform catalyst

Eg fe 2+ in s2o82-/I-

Question 7

Autocatalysis is when the….eg….so when reaction progresses….

Answer 7

Product catalyses the reaction
Eg mn2+ in c2o42-/mno4-
As reaction progresses, r.o.r inc.

Question 8

Fe2+ in haemoglobin allows

Answer 8

Oxygen to be carried in the blood

Question 9

Cisplatin is an anticancer drug that works by…..but also stops…

Answer 9

Preventing cancer cells from reproducing

But also stops normal cells reproducing eg hair cells