4. Explain the process and chemical reaction of sodium carbonate with hydrochloric acid with the help of proper diagram.
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When dilute hydrochloric acid reacts with sodium carbonate, then sodium chloride, carbon dioxide and water are formed. A brisk effervescence is seen in the release of carbon dioxide.
Na2CO3(s) + 2 HCl → 2NaCl(aq) + CO2(g) + H2O(l)
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