The reaction ClO₃− + 3H₂SO₄ → Cl− + 3SO₄= + 6H⁺ in 0.2N H₂SO₄ was studied in 1932 by Nixon and Krauskopf, who reported the data in Table 6.P2. Find a rate expression that is consistent with the data.

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t (min) CIO3 (mol/L) H₂SO4 (mol/L) 0 0.0160 0.0131 2 0.0146 0.0090 0.0141 0.0074 0.0136 0.0060 0.0044 0.0034 3.5 5 7.5 10 12.5 15 17.5 0.0131 0.0127 0.0125 0.0123 0.0121 0.0026 0.0020 0.0015