Chapter 8: Q20P (page 184)

Write the charge balance for an aqueous solution of arsenic acid, $H_{3} {AsO}_{4}$ , in which the acid can disassociate to role="math" localid="1654936423245" $H_{3} {AsO}^{-}_{4}, H {AsO}_{4}^{2 -}, {andAsO}_{4}^{3 -}$ . Look up the structure of arsenic acid in Appendix G and write the structure of ${HAsO}^{2 -}_{4}$

Short Answer

Expert verified

Thus the charge balance equation for aqueous solution of arsenic acid, $H_{3} {AsO}_{4}$ , in which the acid can disassociate to role="math" localid="1654936784437" $H_{2} {AsO}^{-}_{4}, {HAsO}_{4}^{2 -}, {andAsO}_{4}^{3 -}$ is $H^{+} = H_{2} {AsO}_{4}^{-} + 2 [{HAsO}_{4}^{2 -}] + 3 [{AsO}_{4}^{3 -}] + {OH}^{-}$

Step by step solution

Step 1:Disassociation of an aqueous solution of Arsenic acid.

In this problem, we are in a need to write the charge balance for an aqueous solution of arsenic acid $H_{3} {AsO}_{4}$ .

We also need to note that the aqueous solution of arsenic acid can disassociate as follows,

$i . H_{3} {AsO}_{4} \Leftrightarrow H^{+} + H_{2} {AsO}_{4}^{-} ii . H_{3} {AsO}_{4}^{-} \Leftrightarrow H^{+} + H {AsO}_{4}^{2 -} iii . {HAsO}_{4}^{2 -} \Leftrightarrow H^{+} + {AsO}_{4}^{3 -} iv . H_{2} O \Leftrightarrow H^{+} + {OH}^{-}$

Step 2:Charge Balance Equation of Arsenic Acid.

The charge balance of the arsenic acid can be written as follows

H^{+} = H_{2} {AsO}_{4}^{-} + 2 [{HAsO}_{4}^{2 -}] + 3 [{AsO}_{4}^{3 -}] + {OH}^{-}

Thus the charge balance equation for aqueous solution of arsenic acid, $H_{3} {AsO}_{4}$ , in which the acid can disassociate to $H_{2} {AsO}^{-}_{4}, {HAsO}_{4}^{2 -}, {andAsO}_{4}^{3 -}$ is $H^{+} = H_{2} {AsO}_{4}^{-} + 2 [{HAsO}_{4}^{2 -}] + 3 [{AsO}_{4}^{3 -}] + {OH}^{-}$

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Short Answer

Step by step solution

Step 1:Disassociation of an aqueous solution of Arsenic acid.

Step 2:Charge Balance Equation of Arsenic Acid.

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Write the charge balance for an aqueous solution of arsenic acid, H3AsO4, in which the acid can disassociate to role="math" localid="1654936423245" H3AsO-4,HAsO42-,andAsO43-. Look up the structure of arsenic acid in Appendix G and write the structure ofHAsO2-4

Short Answer

Step by step solution

Step 1:Disassociation of an aqueous solution of Arsenic acid.

Step 2:Charge Balance Equation of Arsenic Acid.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemistry Branches

Nuclear Chemistry

Chemical Reactions

Making Measurements

Ionic and Molecular Compounds

Chemical Analysis

Study anywhere. Anytime. Across all devices.