When Sodium Arsenate, N A 3 A S O 4 Na_3AsO_4 N A 3 ​ A S O 4 ​ , Dissolves In Water, What Ions Are Produced?A. 3 N A + + A S O 4 3 − 3 Na^+ + AsO_4^{3-} 3 N A + + A S O 4 3 − ​ B. N A 3 3 + + A S O 4 3 − Na_3^{3+} + AsO_4^{3-} N A 3 3 + ​ + A S O 4 3 − ​ C. 3 N A + + A S 5 + + 4 O 2 − 3 Na^+ + As^{5+} + 4 O^{2-} 3 N A + + A S 5 + + 4 O 2 − D. 3 N A + + A S 3 − + 2 O 2 3 Na^+ + As^{3-} + 2 O_2 3 N A + + A S 3 − + 2 O 2 ​ E. No Ions Are

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Introduction

Sodium arsenate, Na3AsO4Na_3AsO_4, is a compound that consists of sodium ions (Na+Na^+) and arsenate ions (AsO43−AsO_4^{3-}). When this compound dissolves in water, it breaks down into its constituent ions. In this article, we will explore the ions produced when sodium arsenate dissolves in water.

The Dissolution Process

When sodium arsenate dissolves in water, the sodium ions (Na+Na^+) and arsenate ions (AsO43−AsO_4^{3-}) are released into the solution. This process is known as dissociation. The sodium ions are positively charged, while the arsenate ions are negatively charged.

The Ions Produced

So, what ions are produced when sodium arsenate dissolves in water? Let's take a closer look at the options provided:

  • Option A: 3Na++AsO43−3 Na^+ + AsO_4^{3-}
    • This option suggests that three sodium ions (Na+Na^+) and one arsenate ion (AsO43−AsO_4^{3-}) are produced.
    • This is consistent with the chemical formula of sodium arsenate, which is Na3AsO4Na_3AsO_4.
    • Therefore, this option is correct.
  • Option B: Na33++AsO43−Na_3^{3+} + AsO_4^{3-}
    • This option suggests that a single ion with a charge of +3+3 (Na33+Na_3^{3+}) and one arsenate ion (AsO43−AsO_4^{3-}) are produced.
    • However, this is not consistent with the chemical formula of sodium arsenate, which is Na3AsO4Na_3AsO_4.
    • Therefore, this option is incorrect.
  • Option C: 3Na++As5++4O2−3 Na^+ + As^{5+} + 4 O^{2-}
    • This option suggests that three sodium ions (Na+Na^+), one arsenic ion with a charge of +5+5 (As5+As^{5+}), and four oxygen ions with a charge of −2-2 (O2−O^{2-}) are produced.
    • However, this is not consistent with the chemical formula of sodium arsenate, which is Na3AsO4Na_3AsO_4.
    • Therefore, this option is incorrect.
  • Option D: 3Na++As3−+2O23 Na^+ + As^{3-} + 2 O_2
    • This option suggests that three sodium ions (Na+Na^+), one arsenic ion with a charge of −3-3 (As3−As^{3-}), and two oxygen molecules (O2O_2) are produced.
    • However, this is not consistent with the chemical formula of sodium arsenate, which is Na3AsO4Na_3AsO_4.
    • Therefore, this option is incorrect.
  • Option E: No ions are produced
    • This option suggests that no ions are produced when sodium arsenate dissolves in water.
    • However, this is not consistent with the chemical formula of sodium arsenate, which is Na3AsO4Na_3AsO_4.
    • Therefore, this option is incorrect.

Conclusion

In conclusion, when sodium arsenate (Na3AsO4Na_3AsO_4) dissolves in water, the ions produced are three sodium ions (Na+Na^+) and one arsenate ion (AsO43−AsO_4^{3-}). This is consistent with the chemical formula of sodium arsenate.

References

Chemical Formula

Na3AsO4Na_3AsO_4

Chemical Structure

Q: What is sodium arsenate?

A: Sodium arsenate is a chemical compound with the formula Na3AsO4Na_3AsO_4. It is a white crystalline solid that is highly soluble in water.

Q: What are the ions produced when sodium arsenate dissolves in water?

A: When sodium arsenate dissolves in water, the ions produced are three sodium ions (Na+Na^+) and one arsenate ion (AsO43−AsO_4^{3-}).

Q: What is the chemical formula of sodium arsenate?

A: The chemical formula of sodium arsenate is Na3AsO4Na_3AsO_4.

Q: What is the chemical structure of sodium arsenate?

A: The chemical structure of sodium arsenate is Na3AsO4Na_3AsO_4.

Q: Is sodium arsenate toxic?

A: Yes, sodium arsenate is highly toxic and can be hazardous to human health if ingested or inhaled.

Q: What are the common uses of sodium arsenate?

A: Sodium arsenate is commonly used as a pesticide, a wood preservative, and a metal treatment agent.

Q: Can sodium arsenate be used in food production?

A: No, sodium arsenate is not approved for use in food production in many countries due to its toxicity.

Q: Is sodium arsenate stable in water?

A: Yes, sodium arsenate is highly soluble in water and can be stored in aqueous solutions.

Q: Can sodium arsenate be used in pharmaceutical applications?

A: Yes, sodium arsenate has been used in some pharmaceutical applications, such as in the treatment of certain skin conditions.

Q: What are the environmental concerns associated with sodium arsenate?

A: Sodium arsenate can contaminate soil and water if not disposed of properly, and can have negative impacts on aquatic ecosystems.

Q: How should sodium arsenate be handled and stored?

A: Sodium arsenate should be handled and stored in a well-ventilated area, away from heat and moisture. It should also be stored in a sealed container to prevent contamination.

Q: What are the safety precautions that should be taken when handling sodium arsenate?

A: When handling sodium arsenate, it is recommended to wear protective clothing, including gloves and a mask, and to avoid ingesting or inhaling the substance.

Conclusion

In conclusion, sodium arsenate is a highly toxic chemical compound that has a range of uses, including as a pesticide and a metal treatment agent. However, it should be handled and stored with caution, and its use should be strictly regulated to prevent environmental contamination and harm to human health.

References

Chemical Formula

Na3AsO4Na_3AsO_4

Chemical Structure

Na3AsO4Na_3AsO_4