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Choose Arrhenius Acids among the following compounds.

How does calcium metal react with dilute ?
Which salt is formed when HCl reacts with ?
How will you justity that HSO , is a Bronsted - Lowry acid?
Why is HCl not edible although it is present in the stomach
for digestion of food?

Ask by Maxwell Clarke. in Pakistan
Mar 22,2025

Solución de inteligencia artificial de Upstudy

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Arrhenius Acids: and
  • Reaction of Calcium with Dilute : Calcium reacts with sulfuric acid to produce calcium sulfate and hydrogen gas.
  • Salt Formed from HCl and : Barium chloride ( ) is formed when hydrochloric acid reacts with barium carbonate.
  • Justification of as a Bronsted-Lowry Acid: can donate a proton, making it a Bronsted-Lowry acid.
  • Why HCl is Not Edible: HCl is present in the stomach at a controlled, diluted concentration and is essential for digestion. Consuming concentrated HCl is highly corrosive and can damage tissues, making it unsafe to ingest directly.

Solución

Let’s address each of your questions step by step.

1. Arrhenius Acids

Arrhenius acids are substances that increase the concentration of hydrogen ions ( ) in aqueous solution. Among the compounds listed:
  • (Hydrofluoric acid) - Arrhenius acid
  • (This seems to be a typo; possibly meant , which is a base, not an acid)
  • (This is not a complete formula)
  • (This is not a complete formula)
  • (Sulfur dioxide can form acids but is not an Arrhenius acid itself)
  • (Hydrosulfuric acid) - Arrhenius acid
  • (Water can act as both an acid and a base, but is not classified as an Arrhenius acid)
Arrhenius Acids:

2. Reaction of Calcium Metal with Dilute

When calcium metal reacts with dilute sulfuric acid ( ), it produces calcium sulfate ( ) and hydrogen gas ( ). The reaction can be represented as:

3. Salt Formation from HCl and

When hydrochloric acid ( ) reacts with barium carbonate ( ), it produces barium chloride ( ), water, and carbon dioxide. The reaction can be represented as:
Salt formed:

4. Justification of as a Bronsted-Lowry Acid

A Bronsted-Lowry acid is defined as a substance that can donate a proton ( ). The ion (hydrogen sulfate) can donate a proton to form (sulfate ion):
Since can donate a proton, it qualifies as a Bronsted-Lowry acid.

5. Why HCl is Not Edible

Although hydrochloric acid is present in the stomach for digestion, it is not considered edible because:
  • Concentration: The concentration of hydrochloric acid in the stomach is controlled and is much lower than concentrated HCl. In its concentrated form, HCl is corrosive and can damage tissues.
  • Protective Mechanisms: The stomach lining secretes mucus that protects it from the corrosive effects of HCl. Ingesting concentrated HCl can lead to severe burns and damage to the digestive tract.
In summary, while HCl is essential for digestion, it must be in a diluted form and is not safe to consume directly.

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Extra Insights

When considering Arrhenius acids, we look for compounds that produce hydrogen ions ( ) when dissolved in water. From your list, and (likely referring to sulfuric acid rather than ) are identified as Arrhenius acids, as they dissociate to release ions. is also an Arrhenius acid which produces when dissolved in water, while can act as both an acid and a base but is not classified strictly as an Arrhenius acid.
When calcium metal reacts with dilute , it undergoes a vigorous reaction, producing hydrogen gas and calcium sulfate. The reaction can be represented as:
This visible release of hydrogen gas showcases how reactive calcium is with acids, and you’ll often observe bubbles forming during the process.
When hydrochloric acid reacts with barium carbonate , it yields barium chloride , water, and carbon dioxide gas. The reaction can be summarized as:
This reaction highlights how acids can interact with carbonates to produce gas as a byproduct, which is always a fun surprise in chemistry!
To justify that (the bisulfite ion) is a Brønsted-Lowry acid, one can point out that it can donate a proton ( ) to a base. For example, in an aqueous solution, it can donate a proton to water, forming and hydronium ion. Thus, it clearly fits within the Brønsted-Lowry definition of acids as proton donors.
As for HCl, while it’s indeed present in the stomach for digestion, its high acidity means that direct contact with the stomach lining can cause damage. The stomach is lined with a protective mucous layer that prevents HCl from harming the tissue while allowing it to help digest food. So, while it’s crucial for digestion, too much exposure is not a good thing!

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