Record the temperature and time data for all five runs (Parts I and II) in this

Question

Record the temperature and time data for all five runs (Parts I and II) in this experiment. Run # 1 Temperature (°C) | Time ofcolor change 29"C 12. 3230C L/Y CALCULATIONS Calculate for each run: (a) the reactant molarities in each reaction mixture, (b) the time for the color change to occur, (c) the rate of reaction, and (d) the Kelvin temperature. Record the values in the table below Temp Time for color Rate of reaction Rate constant Run (K HO IS,0,1 change (seconds) (Ms) value (.a. value) 438 3 210 29o 4 274

Explanation / Answer

As we know that the rate will be equal to 1/2 delta [S2O32-] /delta T

Using this equation the rate for run 1 comes out to be 4.96*10-5 M/s

For 2nd run =R2 = 2.85 *10-5

R3 = 2.31 *10-5

R4= 1.03 * 10-6

R5=1.67*10-5

The corresponding k values will be

K1 =. 095

K2 =.113

K3 =. 045

K4 =.00198

K5 =.032

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