The following initial rate data are for the oxidation of arsenate ion by cerium(IV) ion in aqueous solution: Experiment 1 2 3 4 Rate k = AsO3³+ 2Ce4+. = 4+ [ASO3³] [C¹+] M M 0.0311 0.0622 0.0311 0.0622 3- + H₂O → AsO4³ + 2Ce³+ + 2H+ M-2.s -1 0 Complete the rate law for this reaction in the box below. Use the form k[A] [B]", where '1' is understood for m or n and concentrations taken to the zero power do not appear. Don't enter 1 for m or n. I 0.145 0.145 0.290 0.290 Initial Rate, -1 M.s 0.000345 0.000690 0.00138 0.00276

Chemistry for Engineering Students
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Chapter13: Electrochemistry
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Problem 13.101PAE
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The following initial rate data are for the oxidation of arsenate ion by cerium(IV) ion in aqueous solution:

\[ \text{AsO}_3^{3-} + 2 \text{Ce}^{4+} + \text{H}_2\text{O} \rightarrow \text{AsO}_4^{3-} + 2 \text{Ce}^{3+} + 2 \text{H}^+ \]

| Experiment | \([\text{AsO}_3^{3-}]_0\), M | \([\text{Ce}^{4+}]_0\), M | Initial Rate, M·s\(^{-1}\) |
|------------|----------------------|---------------------|-------------------------------|
| 1          | 0.0311               | 0.145               | 0.000345                      |
| 2          | 0.0622               | 0.145               | 0.000690                      |
| 3          | 0.0311               | 0.290               | 0.00138                       |
| 4          | 0.0622               | 0.290               | 0.00276                       |

Complete the rate law for this reaction in the box below.

Use the form \(k[\text{A}]^m[\text{B}]^n\), where '1' is understood for \(m\) or \(n\) and concentrations taken to the zero power do not appear. Don't enter 1 for \(m\) or \(n\).

Rate = \_\_\_\_

\[ k = \_\_\_\_ \text{ M}^{-2} \cdot \text{s}^{-1} \]
Transcribed Image Text:The following initial rate data are for the oxidation of arsenate ion by cerium(IV) ion in aqueous solution: \[ \text{AsO}_3^{3-} + 2 \text{Ce}^{4+} + \text{H}_2\text{O} \rightarrow \text{AsO}_4^{3-} + 2 \text{Ce}^{3+} + 2 \text{H}^+ \] | Experiment | \([\text{AsO}_3^{3-}]_0\), M | \([\text{Ce}^{4+}]_0\), M | Initial Rate, M·s\(^{-1}\) | |------------|----------------------|---------------------|-------------------------------| | 1 | 0.0311 | 0.145 | 0.000345 | | 2 | 0.0622 | 0.145 | 0.000690 | | 3 | 0.0311 | 0.290 | 0.00138 | | 4 | 0.0622 | 0.290 | 0.00276 | Complete the rate law for this reaction in the box below. Use the form \(k[\text{A}]^m[\text{B}]^n\), where '1' is understood for \(m\) or \(n\) and concentrations taken to the zero power do not appear. Don't enter 1 for \(m\) or \(n\). Rate = \_\_\_\_ \[ k = \_\_\_\_ \text{ M}^{-2} \cdot \text{s}^{-1} \]
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