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What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write the chemical equation for the reaction involved.
A brisk effervescence would be observed if HCl is added to Na2CO3 due to the evolution of CO2 gas.
$Na_2CO_3 + HCl → NaCl + H_2O + CO_2$
(Extra information: HCl is an acid and sodium carbonate is a base. When an acid and a base react they form salt and water. This is called a neutralization reaction. )
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