5. Observe the figure and answer, the following. Put the copper wire in a solution of magnesium chloride and an iron nail in the solution of copper sulphate
(i) Record your observation after sometime
(ii) In which test tube a reaction
hastaken place?
(iii) How did you recognise that
reaction has taken place?
(iv) What is the type of reaction?
(V) Write the balanced chemical
reaction.
6. Write chemical equation of the given statements and balance them.
1. Reaction of iron with steam.
2. Sodium metal is dropped in a beaker of water.
3. Aluminium react with steam.
4. Reaction of copper with concentrated nitric acid.
5. Reaction of dilute acids with non metals.
Answers
Ans.
5.
(1) Observation :
a) The iron nail gets coated with a reddish brown coloured copper and the blue
colour of copper sulphate solution fades out.
b) There is no change seen in copper wire.
(ii) Reaction is taken place in the test tube where iron nail is put.
(iii) We can see a copper coating on iron nail. From which we can understand chemical
reaction has taken place.
iv) Displacement reaction is taken place. Iron is more reactive than copper. So iron
displaces copper from copper sulphate.
(v) The balanced chemical equation is CuSO4 + Fe → FeSO, + Cu.
6.
1.iron reacts with steam to form ferrous oxide and hydrogen gas.
3 Fe(s) + 4H2O(g) → Fe2O_(s) + 4H2(g)
Tron steam
Ferrous
3.Aluminium reacts with steam of form aluminium oxide and hydrogen.
2 Al(s) + 3 H2O(g) → A1,03(s) + 3 H2(g)
Aluminium Steam Aluminium oxide Hydrogen
Answer:
Ans.
5.
(1) Observation :
a) The iron nail gets coated with a reddish brown coloured copper and the blue
colour of copper sulphate solution fades out.
b) There is no change seen in copper wire.
(ii) Reaction is taken place in the test tube where iron nail is put.
(iii) We can see a copper coating on iron nail. From which we can understand chemical
reaction has taken place.
iv) Displacement reaction is taken place. Iron is more reactive than copper. So iron
displaces copper from copper sulphate.
(v) The balanced chemical equation is CuSO4 + Fe → FeSO, + Cu.
6.
1.iron reacts with steam to form ferrous oxide and hydrogen gas.
3 Fe(s) + 4H2O(g) → Fe2O_(s) + 4H2(g)
Tron steam
Ferrous
3.Aluminium reacts with steam of form aluminium oxide and hydrogen.
2 Al(s) + 3 H2O(g) → A1,03(s) + 3 H2(g)
Aluminium Steam Aluminium oxide Hydrogen