Select The Correct Answer.What Is The Anion Found In Phosphoric Acid?A. P O 3 − PO^{3-} P O 3 − B. P O 2 3 − PO_2^{3-} P O 2 3 − ​ C. P O 3 3 − PO_3^{3-} P O 3 3 − ​ D. P O 4 3 − PO_4^{3-} P O 4 3 − ​

Phosphoric acid, also known as orthophosphoric acid, is a colorless, odorless, and syrupy liquid that is widely used in various industries, including food, pharmaceuticals, and detergents. It is a weak acid that is composed of hydrogen, oxygen, and phosphorus atoms. In this article, we will discuss the anion found in phosphoric acid and explore the correct answer among the given options.

What is Phosphoric Acid?

Phosphoric acid is a polyprotic acid, which means it can donate multiple protons (H+ ions) in a single molecule. Its chemical formula is H3PO4, indicating that it contains three hydrogen atoms and one phosphorus atom bonded to four oxygen atoms. The structure of phosphoric acid is as follows:

H3PO4

The Anion of Phosphoric Acid

When phosphoric acid reacts with a base, it donates a proton (H+ ion) and forms a conjugate base, which is the anion of phosphoric acid. The anion of phosphoric acid is formed when one or more of the hydrogen atoms in the acid are replaced by a base. The resulting anion is a polyatomic ion that contains the phosphorus atom bonded to four oxygen atoms.

Options for the Anion of Phosphoric Acid

Now, let's examine the given options for the anion of phosphoric acid:

A. $PO^{3-}$ B. $PO_2^{3-}$ C. $PO_3^{3-}$ D. $PO_4^{3-}$

Analyzing the Options

To determine the correct answer, we need to understand the structure of the anion of phosphoric acid. The anion is formed when one or more of the hydrogen atoms in the acid are replaced by a base. In the case of phosphoric acid, the anion is formed when one hydrogen atom is replaced by a base, resulting in the loss of one proton (H+ ion).

The Correct Answer

The correct answer is D. $PO_4^{3-}$. This anion is formed when one hydrogen atom in the phosphoric acid molecule is replaced by a base, resulting in the loss of one proton (H+ ion). The resulting anion contains the phosphorus atom bonded to four oxygen atoms, which is consistent with the structure of the phosphoric acid molecule.

Why is $PO_4^{3-}$ the Correct Answer?

$PO_4^{3-}$ is the correct answer because it is the anion that is formed when one hydrogen atom in the phosphoric acid molecule is replaced by a base. This anion contains the phosphorus atom bonded to four oxygen atoms, which is consistent with the structure of the phosphoric acid molecule. The other options, $PO^{3-}$, $PO_2^{3-}$, and $PO_3^{3-}$, do not accurately represent the anion of phosphoric acid.

Conclusion

In conclusion, the anion found in phosphoric acid is $PO_4^{3-}$. This anion is formed when one hydrogen atom in the phosphoric acid molecule is replaced by a base, resulting in the loss of one proton (H+ ion). The resulting anion contains the phosphorus atom bonded to four oxygen atoms, which is consistent with the structure of the phosphoric acid molecule.

Key Takeaways

• Phosphoric acid is a polyprotic acid that can donate multiple protons (H+ ions) in a single molecule.
• The anion of phosphoric acid is formed when one or more of the hydrogen atoms in the acid are replaced by a base.
• The correct answer is D. $PO_4^{3-}$, which is the anion that is formed when one hydrogen atom in the phosphoric acid molecule is replaced by a base.

Frequently Asked Questions

Q: What is the chemical formula of phosphoric acid? A: The chemical formula of phosphoric acid is H3PO4.

Q: What is the anion of phosphoric acid? A: The anion of phosphoric acid is $PO_4^{3-}$.

Q: Why is $PO_4^{3-}$ the correct answer? A: $PO_4^{3-}$ is the correct answer because it is the anion that is formed when one hydrogen atom in the phosphoric acid molecule is replaced by a base.

References

• "Phosphoric Acid" by the International Union of Pure and Applied Chemistry (IUPAC)
• "Phosphoric Acid" by the National Institute of Standards and Technology (NIST)
• "Phosphoric Acid" by the Royal Society of Chemistry (RSC)
  Phosphoric Acid Q&A =====================

Phosphoric acid is a widely used chemical compound that has many applications in various industries. However, it can be a complex topic to understand, especially for those who are new to chemistry. In this article, we will provide a comprehensive Q&A section to help you better understand phosphoric acid and its properties.

Q: What is phosphoric acid?

A: Phosphoric acid, also known as orthophosphoric acid, is a colorless, odorless, and syrupy liquid that is widely used in various industries, including food, pharmaceuticals, and detergents. It is a weak acid that is composed of hydrogen, oxygen, and phosphorus atoms.

Q: What is the chemical formula of phosphoric acid?

A: The chemical formula of phosphoric acid is H3PO4, indicating that it contains three hydrogen atoms and one phosphorus atom bonded to four oxygen atoms.

Q: What is the anion of phosphoric acid?

A: The anion of phosphoric acid is $PO_4^{3-}$, which is formed when one hydrogen atom in the phosphoric acid molecule is replaced by a base.

Q: What are the properties of phosphoric acid?

A: Phosphoric acid is a weak acid that has a pH of around 2.0. It is a syrupy liquid at room temperature and has a melting point of around 42.35°C. It is also highly soluble in water and has a high boiling point of around 213.3°C.

Q: What are the applications of phosphoric acid?

A: Phosphoric acid has many applications in various industries, including:

• Food industry: Phosphoric acid is used as a food additive and preservative in the production of soft drinks, candies, and other food products.
• Pharmaceutical industry: Phosphoric acid is used as an excipient in the production of pharmaceuticals and as a pH adjuster in the formulation of medications.
• Detergent industry: Phosphoric acid is used as a cleaning agent and pH adjuster in the production of detergents and cleaning products.
• Fertilizer industry: Phosphoric acid is used as a raw material in the production of fertilizers and other agricultural products.

Q: Is phosphoric acid safe to handle?

A: Phosphoric acid can be safe to handle if proper precautions are taken. It is a weak acid and is not as corrosive as other acids, but it can still cause skin and eye irritation. It is also highly soluble in water, which can make it difficult to handle.

Q: How should phosphoric acid be stored?

A: Phosphoric acid should be stored in a cool, dry place away from direct sunlight and heat sources. It should also be stored in a well-ventilated area to prevent the buildup of fumes.

Q: Can phosphoric acid be disposed of properly?

A: Yes, phosphoric acid can be disposed of properly. It should be disposed of in accordance with local and national regulations. It is also recommended to wear protective gear, such as gloves and goggles, when handling phosphoric acid.

Q: What are the environmental concerns associated with phosphoric acid?

A: Phosphoric acid can have environmental concerns associated with its production and disposal. It can contaminate soil and water if not disposed of properly, and it can also contribute to the formation of acid rain.

Q: Can phosphoric acid be used in household cleaning products?

A: Yes, phosphoric acid can be used in household cleaning products. It is a common ingredient in many cleaning products, including detergents and cleaning solutions.

Q: Is phosphoric acid a good choice for cleaning surfaces?

A: Yes, phosphoric acid can be a good choice for cleaning surfaces. It is a mild acid that can effectively remove dirt and grime without damaging surfaces.

Q: Can phosphoric acid be used in the production of food products?

A: Yes, phosphoric acid can be used in the production of food products. It is a common ingredient in many food products, including soft drinks, candies, and other sweet treats.

Q: What are the health concerns associated with phosphoric acid?

A: Phosphoric acid can have health concerns associated with its consumption. It can cause digestive problems, such as nausea and diarrhea, if consumed in large quantities.

Q: Can phosphoric acid be used in the production of pharmaceuticals?

A: Yes, phosphoric acid can be used in the production of pharmaceuticals. It is a common ingredient in many medications, including those used to treat digestive problems.

Q: Is phosphoric acid a good choice for industrial applications?

A: Yes, phosphoric acid can be a good choice for industrial applications. It is a versatile chemical that can be used in a variety of applications, including the production of fertilizers, detergents, and other industrial products.

Q: Can phosphoric acid be used in the production of cosmetics?

A: Yes, phosphoric acid can be used in the production of cosmetics. It is a common ingredient in many personal care products, including skin care products and hair care products.

Q: What are the benefits of using phosphoric acid?

A: The benefits of using phosphoric acid include its versatility, effectiveness, and affordability. It can be used in a variety of applications, including the production of food products, pharmaceuticals, and industrial products.

Q: What are the limitations of using phosphoric acid?

A: The limitations of using phosphoric acid include its potential to cause skin and eye irritation, its high solubility in water, and its potential to contaminate soil and water if not disposed of properly.

Q: Can phosphoric acid be used in the production of biofuels?

A: Yes, phosphoric acid can be used in the production of biofuels. It is a common ingredient in many biofuel production processes, including those used to produce ethanol and other biofuels.

Q: What are the future prospects of phosphoric acid?

A: The future prospects of phosphoric acid are promising. It is a versatile chemical that can be used in a variety of applications, including the production of food products, pharmaceuticals, and industrial products. Its demand is expected to increase in the coming years due to its growing use in various industries.