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4. For the reaction HCl + Ca CO3 -> Ca Cl2 + CO24a. Suggest 2 observations that makes you confirm a chemical reaction have taken place

Question

  1. For the reaction HCl + Ca CO3 -> Ca Cl2 + CO24a. Suggest 2 observations that makes you confirm a chemical reaction have taken place
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Solution

Claro, aquí tienes la respuesta paso a paso:

  1. Observación de la formación de gas:

    • Durante la reacción entre el ácido clorhídrico (HCl) y el carbonato de calcio (CaCO3), se produce dióxido de carbono (CO2) como uno de los productos. La liberación de burbujas de gas es una clara indicación de que una reacción química está ocurriendo.

  2. Cambio en la apariencia del sólido:

    • El carbonato de calcio (CaCO3) es un sólido blanco. A medida que reacciona con el ácido clorhídrico, se disuelve y forma cloruro de calcio (CaCl2), que es soluble en agua. La desaparición del sólido blanco y la formación de una solución clara es otra observación que confirma que ha tenido lugar una reacción química.

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1. Explain the term Species2. In the neutralization reaction, What happens to the pH of the acid  solution.3. Explain, what happens to the pH of an alkali solution during the neutralization reaction??4. For the reaction HCl + Ca CO3 -> Ca Cl2 + CO24a. Suggest 2 observations that makes you confirm a chemical reaction have taken place

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