A student accidentally spills a small amount of dilute sulfuric acid on the laboratory bench and neutralises it with sodium bicarbonate. Which product confirms that a neutralization reaction has occurred?
Formation of carbon dioxide and salt
Dilute sulfuric acid (H2SO4) spilled in a laboratory is neutralized with a mild base such as sodium hydrogen carbonate (baking soda) or a carbonate.
The acid reacts with the hydrogen carbonate/carbonate to form a salt, water and carbon dioxide: H2SO4 + 2NaHCO3 → Na2SO4 + 2H2O + 2CO2.
The brisk effervescence of carbon dioxide along with the formation of a salt shows that the acid has been neutralized.
Hydrogen gas is produced when an acid reacts with an active metal, not in neutralization; metal oxides and oxygen gas are not products of an acid–base reaction.
Hence, the answer is formation of carbon dioxide and salt.
Similar Questions
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Balance the following reaction:
\(3\,\text{MnO}_2\,(s) + x\,\text{Al}\,(s) \rightarrow 3\,\text{Mn}\,(l) + y\,\text{Al}_2\text{O}_3\,(s) + \text{Heat}\)
What type of ions exchange between reactants in a double displacement reaction?
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Fe + H2O4 → Fe3O4 + H2
Which statement best explains why this step is INCORRECT?
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When carbon dioxide gas is passed through lime water (calcium hydroxide solution), it produces a white precipitate which is of:
Read the following statements and choose the correct option.
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Important Questions from Chemical Reaction
Which of the following statement is/are true?
I. In physical change new substance is formed. substance is formed.
II. In chemical change no new substance is formed.
Which of the following cells involves similar chemical reactions?
The information not obtained from balanced chemical equation is
Oxygen cannot be obtained by which one of the following methods?
Which of the following statement is correct?
I. Insoluble salt is obtained by precipitation reaction.
II. Addition of oxygen or loss of hydrogen is called oxidation.
