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Get Answers to all your Questions
During the reaction of some metals with dilute hydrochloric acid, the following observations were made by a student :
(a) Silver does not show any change.
(b) Some bubbles of a gas are seen when lead is reacted with the acid.
(c) The reaction of sodium is found to be highly explosive.
(d) The temperature of the reaction mixture rises when aluminium is added to the acid.
Explain these observations giving appropriate reason.
Answers (1)
a) because silver is a less reactive element
b) because reaction of alluminium with hydrochloric acid is exothermic reaction
c) as sodium is very reactive element so it reacts vigorously with HCl and is found to be explosive
d) bubbles of hydrogen gas are seen when lead reacts with hydrochloric acid
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