Why reaction of sodium with dilute HCl highly explosive?

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Solution

Sodium and hydrochloric acid gives the following reaction:

2Na + 2HCl → 2NaCl + H2

Since, sodium is a highlyreactive metal, thus it reacts withhydrochloric acid vigorously and produces large amount of heat. Thus the reaction between hydrochloric acid and sodium is highly explosive. Even sodium reacts with water vigrouly.

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The reaction of sodium metal is found to be highly explosive. Comment.

Question 31
During the reaction of some metals with dilute hydrochloric acid, following observations were made.

(a) Silver metal does not show any change.

(b) The temperature of the reaction mixture rises when aluminium (Al) is added.

(d) Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.

Explain these observations giving suitable reasons.

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