Questions: The following reaction occurs in basic solution. Please balance the following reaction and fill in the missing coefficients ClO2^-(aq) + HPO3^2-(aq) -> Cl^-(aq) + PO4^3-(aq) - Do not include the state (phase) information. - Include all coefficients, even those equal to 1. Provide your answer below: OH^- ClO2 HPO3^2- Cl^-+ PO4^3-+ H2O

The following reaction occurs in basic solution. Please balance the following reaction and fill in the missing coefficients ClO2^-(aq) + HPO3^2-(aq) -> Cl^-(aq) + PO4^3-(aq) - Do not include the state (phase) information. - Include all coefficients, even those equal to 1. Provide your answer below: OH^- ClO2 HPO3^2- Cl^-+ PO4^3-+ H2O
Transcript text: The following reaction occurs in basic solution. Please balance the following reaction and fill in the missing coefficients \[ \mathrm{ClO}_{2}^{-}(\mathrm{aq})+\mathrm{HPO}_{3}^{2-}(\mathrm{aq}) \longrightarrow \mathrm{Cl}^{-}(\mathrm{aq})+\mathrm{PO}_{4}^{2-}(\mathrm{aq}) \] - Do not include the state (phase) information. - Include all coefficients, even those equal to 1. Provide your answer below: $\square$ $\mathrm{OH}^{-}$ $\square$ $\mathrm{ClO}_{2}$ $\square$ $\mathrm{HPO}_{3}{ }^{2-}$ $\square$ $\mathrm{Cl}^{-}+$ $\square$ $\mathrm{PO}_{4}{ }^{3-}+$ $\square$ $\mathrm{H}_{2} \mathrm{O}$
failed

Solution

failed
failed

Solution Steps

Step 1: Identify Oxidation and Reduction Half-Reactions

In the given reaction, we need to identify which species are oxidized and reduced.

  • Oxidation: The oxidation state of phosphorus in \(\mathrm{HPO}_{3}^{2-}\) is +3, and it changes to +5 in \(\mathrm{PO}_{4}^{3-}\). Therefore, \(\mathrm{HPO}_{3}^{2-}\) is oxidized.
  • Reduction: The oxidation state of chlorine in \(\mathrm{ClO}_{2}^{-}\) is +3, and it changes to -1 in \(\mathrm{Cl}^{-}\). Therefore, \(\mathrm{ClO}_{2}^{-}\) is reduced.
Step 2: Write the Half-Reactions

Write the oxidation and reduction half-reactions separately.

  • Oxidation Half-Reaction: \[ \mathrm{HPO}_{3}^{2-} \rightarrow \mathrm{PO}_{4}^{3-} \]

  • Reduction Half-Reaction: \[ \mathrm{ClO}_{2}^{-} \rightarrow \mathrm{Cl}^{-} \]

Step 3: Balance Atoms Other Than O and H

Balance all atoms except for oxygen and hydrogen in each half-reaction.

  • Oxidation Half-Reaction: Phosphorus is already balanced.
  • Reduction Half-Reaction: Chlorine is already balanced.
Step 4: Balance Oxygen Atoms

Add \(\mathrm{H}_2\mathrm{O}\) to balance the oxygen atoms.

  • Oxidation Half-Reaction: \[ \mathrm{HPO}_{3}^{2-} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{PO}_{4}^{3-} \]

  • Reduction Half-Reaction: \[ \mathrm{ClO}_{2}^{-} \rightarrow \mathrm{Cl}^{-} + 2\mathrm{H}_2\mathrm{O} \]

Step 5: Balance Hydrogen Atoms

Add \(\mathrm{OH}^{-}\) to balance the hydrogen atoms in basic solution.

  • Oxidation Half-Reaction: \[ \mathrm{HPO}_{3}^{2-} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{PO}_{4}^{3-} + 2\mathrm{H}^{+} \] Add \(\mathrm{OH}^{-}\) to both sides: \[ \mathrm{HPO}_{3}^{2-} + \mathrm{H}_2\mathrm{O} + 2\mathrm{OH}^{-} \rightarrow \mathrm{PO}_{4}^{3-} + 2\mathrm{H}_2\mathrm{O} \]

  • Reduction Half-Reaction: \[ \mathrm{ClO}_{2}^{-} + 4\mathrm{H}^{+} \rightarrow \mathrm{Cl}^{-} + 2\mathrm{H}_2\mathrm{O} \] Add \(\mathrm{OH}^{-}\) to both sides: \[ \mathrm{ClO}_{2}^{-} + 4\mathrm{OH}^{-} \rightarrow \mathrm{Cl}^{-} + 2\mathrm{H}_2\mathrm{O} + 4\mathrm{OH}^{-} \]

Step 6: Balance Charge

Balance the charge by adding electrons.

  • Oxidation Half-Reaction: \[ \mathrm{HPO}_{3}^{2-} + 2\mathrm{OH}^{-} \rightarrow \mathrm{PO}_{4}^{3-} + 2\mathrm{H}_2\mathrm{O} + 2e^{-} \]

  • Reduction Half-Reaction: \[ \mathrm{ClO}_{2}^{-} + 4\mathrm{e}^{-} + 4\mathrm{OH}^{-} \rightarrow \mathrm{Cl}^{-} + 2\mathrm{H}_2\mathrm{O} \]

Step 7: Equalize Electrons and Combine Half-Reactions

Multiply the oxidation half-reaction by 2 to equalize the electrons and then add the half-reactions.

  • Oxidation Half-Reaction (multiplied by 2): \[ 2\mathrm{HPO}_{3}^{2-} + 4\mathrm{OH}^{-} \rightarrow 2\mathrm{PO}_{4}^{3-} + 4\mathrm{H}_2\mathrm{O} + 4e^{-} \]

  • Combined Reaction: \[ 2\mathrm{HPO}_{3}^{2-} + \mathrm{ClO}_{2}^{-} + 4\mathrm{OH}^{-} \rightarrow 2\mathrm{PO}_{4}^{3-} + \mathrm{Cl}^{-} + 4\mathrm{H}_2\mathrm{O} \]

Final Answer

The balanced reaction with coefficients is:

\[ \boxed{4 \ \mathrm{OH}^{-} + 1 \ \mathrm{ClO}_{2}^{-} + 2 \ \mathrm{HPO}_{3}^{2-} \rightarrow 1 \ \mathrm{Cl}^{-} + 2 \ \mathrm{PO}_{4}^{3-} + 2 \ \mathrm{H}_{2}\mathrm{O}} \]

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
Un tanque abierto al aire completamente lleno de agua tiene una válvula de alivio cerca del fondo. La válvula se encuentra 1.0 m debajo de la superficie del agua. Se libera el agua de la válvula para impulsar una turbina, la cual genera electricidad. El área en la parte superior del tanque, AT, es 10 veces el área de sección transversal, AV, de la abertura de la válvula. Calcule la velocidad del agua conforme sale de la válvula. Ignore la fricción y la viscosidad. Además, calcule la velocidad de una gota de agua soltada a partir del reposo desde h=1.0 m cuando alcanzá la elevación de la válvula. Compare las dos velocidades. Vtext valbula =quad mathrmm / mathrms, Vtext gota =quad mathrmm / mathrms.
failedAnswered
Q7. Which law was created in 1975 to ensure that children with disabilities 1 point have the opportunity to receive a free and appropriate education? ESSA IDEA NCLB
failedAnswered
Consider the following equation: 3y-4-9=0 Step 1 of 4 : Rewrite the equation above in standard form and determine if there is a solution.
failedAnswered
What is an advantage of using interviews as a research method? They allow the researcher to maintain strict control of the data-collection process. They can affirm preconceptions and stereotypes. They reveal attitudes and beliefs inaccessible by any other means. They allow researchers to analyze data statistically and draw correlations.
failedAnswered
The image contains an anatomical diagram of a kidney with labeled parts. The labels are: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O