What would you observe on adding dilute hydrochloric acid to
(i) sodium bicarbonate placed in a test tube?
(ii) zinc metal in a test tube? [3 MARKS]

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Solution

Each point: 1.5 Mark

(i) Carbon dioxide gas will evolve accompanied by brisk effervescene.

$N a H C O_{3} (s) + H C l (a q) \to N a C l (a q) + C O_{2} (g) + H_{2} O (a q)$

(ii) Hydrogen gas will evolve accompanied by brisk effervescene.

$Z n (s) + 2 H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)$

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Similar questions

What would you observe by adding dilute hydrochloric acid to:
(i) Sodium bicarbonate kept in a test tube?
(ii) Zinc metal kept in a test tube?

What happens when dilute hydrochloric acid is added to zinc pieces taken in a test tube:

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