If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

Question

If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe? — Exam MCQ

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B. CO2 gas comes out with brisk effervescence. — A chemical reaction occurs when we add hydrochloric acid to washing soda (sodium carbonate). The chemical equation for the reaction is: Na2CO3 + 2HCl → 2NaCl + H2O + CO2. The acid (HCl) reacts with the base (Na2CO3) to form a salt (NaCl), water (H2O) and carbon dioxide gas (CO2). The reaction releases carbon dioxide gas, which appears as bubbles and causes brisk effervescence, since carbon dioxide is a gas at room temperature and pressure and evolves rapidly, so excess gas escapes as bubbles.

rrbjepyq.in · Answer

A. White-coloured precipitate is formed.

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C. H2 gas comes out with pop sound.

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D. Only neutralisation reaction occurs, no gas is released.

If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

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