Question

What do you observe on adding dilute hydrochloric acid to
i) Sodium carbonate placed in a test tube.
ii) Zinc metal in a test tube?​

Answer 1

Answer:

When dilute hydrochloric acid is added to granulated zinc placed in a test tube, zinc metal is converted to zinc chloride and hydrogen gas is evolved in the reaction. In the reaction we can see that a zinc chloride salt is formed and hydrogen gas is evolved. The evolved hydrogen gas is colourless and odourless.

Answer 2

Answer:

1.When dilute hydrochloric acid is added to sodium carbonate solution, the products formed are sodium chloride, carbon dioxide gas, and water. The occurrence of reaction can be seen by the release of effervescence at the end of the test tube. Hence, effervescence due to the release of carbon dioxide gas will be seen.

2.When dilute hydrochloric acid is added to granulated zinc placed in a test tube, zinc metal is converted to zinc chloride and hydrogen gas is evolved in the reaction. In the reaction we can see that a zinc chloride salt is formed and hydrogen gas is evolved. The evolved hydrogen gas is colourless and odourless.

Explanation:

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