The reaction SO 2 Cl 2(g) ----->SO 2(g) + Cl 2(g) is first order inSO 2 Cl 2 . U

Question

The reaction SO2Cl2(g)----->SO2(g) + Cl2(g) is first order inSO2Cl2. Using the following kineticdata, determine the magnitude of the first-order rateconstant? Time(s)                       Pressure SO2Cl2 (atm) 0                                          1.00 2,500                                   0.947 5,000                                   0.895 7,500                                   0.848 10,000                                 0.803 The reaction SO2Cl2(g)----->SO2(g) + Cl2(g) is first order inSO2Cl2. Using the following kineticdata, determine the magnitude of the first-order rateconstant? Time(s)                       Pressure SO2Cl2 (atm) 0                                          1.00 2,500                                   0.947 5,000                                   0.895 7,500                                   0.848 10,000                                 0.803

Explanation / Answer

A = A0*exp(-kt) ln(A) = ln(A0) - kt Plot ln(A) vs t, slope of line is -k plot t ln(Pressure) 0 0 2500 -0.05 5000 -0.11 7500 -0.16 10000 -0.22 slope = -2.20e-5 Thus, k = 2.20 x 10^-5

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