Displacement reactions

Question 1

a displacement reaction is

Answer 1

a reaction in which one element replaces another element in a compound

Question 2

the term displacement reaction is used in………………chemistry while the term substitution reaction is used in……………….chemistry

Answer 2

displacement reaction= inorganic chemistry

substitution reaction= organic chemistry

Question 3

the displacement reaction between magnesium and aqueous copper sulfate involves what observational change?

Answer 3

solution turns colourless from blue and the magnesium turns brown from silvery

Question 4

the thermite method is when

Answer 4

a mixture of aluminium and iron(III) oxide is put just above the place where two metal rails are to be joined up. the following reaction is so exothermic that the iron is melted

Question 5

displacement reactions are (in relation to OIL RIG)

Answer 5

redox reactions

Question 6

the 4 similarities between the following two reactions are:

1) Mg(S) + CuSO4(aq) = Cu(s) + MgSO4(aq)
2) 2Al(s) + Fe2O3(s) = 2Fe(s) + Al2O3(s)

Answer 6

• both involve a metal reacting with a compound of a different metal
• both produce a metal and a compound of a different metal
• both are redox
• the metals have ‘swapped’ compounds

Question 7

the 3 differneces between the following two reactions are:

1) Mg(S) + CuSO4(aq) = Cu(s) + MgSO4(aq)
2) 2Al(s) + Fe2O3(s) = 2Fe(s) + Al2O3(s)

Answer 7

• reaction 1 is in aqueous solution while reaction 2 involves solids only
• 1 occurs without the input of energy, while 2 needs a high temp. to start it
• 1 is likely to be done in a lab while 2 is done for a specific purpoes in industry