Q. 925.0( 4 Votes )
State and explain the reactions, if any, of the following metals with a solution of copper sulphate:
(a) no displacement reaction will take place with the solution of copper sulphate, as gold is less reactive then the copper.
(b) there will not be any reaction between copper and copper sulphate.
(c) copper will be replaced by zinc from the copper sulphate
(d) in case of mercury no displacement reaction will take place as mercury is less reactive then copper.
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During the reaction of some metals with dilute hydrochloric acid, following observations were made.
i. The temperature of the reaction mixture rises when aluminium (Al) is added.
ii. The reaction of sodium metal is found to be highly explosive.
iii. Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
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State which of the following chemical reaction will take place, giving a suitable reason for each.
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Fe(s)+ ZnSO4(aq) → FeSO4(aq)+Zn(s)
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(b) What is the source of liquid droplets seen on the inner upper side of the test tube during the heating process?
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