what happens when dilute hydrochloric acid is added to iron fillings tick the correct answer
What happens when dilute hydrochloric acid is added to iron fillings tick the correct answer
Answer:
When dilute hydrochloric acid (HCl) is added to iron fillings (Fe), a chemical reaction occurs. This reaction results in the formation of iron(II) chloride (FeCl₂) and the release of hydrogen gas (H₂). The overall chemical reaction can be described by the following balanced equation:
Balanced Chemical Equation:
\text{Fe (s) + 2HCl (aq) → FeCl}_2\text{ (aq) + H}_2\text{ (g)}
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Explanation of the Reaction:
- Iron (Fe): Iron is a metal that can react with acids.
- Dilute Hydrochloric Acid (HCl): When dilute hydrochloric acid is involved, it can donate hydrogen ions (H⁺).
- Formation of Iron(II) Chloride (FeCl₂): The iron reacts with the hydrochloric acid to form iron(II) chloride, a soluble salt.
- Release of Hydrogen Gas (H₂): During this reaction, hydrogen gas is released, which can be observed as bubbles forming in the solution.
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Observations During the Reaction:
- Effervescence: You may observe bubbling in the solution, indicating the release of hydrogen gas.
- Formation of a Green Solution: The resultant solution may appear greenish due to the presence of iron(II) chloride.
Final Answer:
When dilute hydrochloric acid is added to iron fillings, iron(II) chloride (FeCl₂) is formed, and hydrogen gas (H₂) is released. The correct answer would involve the identification of these products and the observables: the production of gas (bubbles) and a possible color change in the solution due to the iron(II) chloride.