The concentration of fe3 ion at the beginning of an, Chemistry

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The concentration of fe3 ion at the beginning of an

1.) A first-order reaction has rate constants of 4.5 10-2 s-1 and 9.0 10-2 s-1 at 0°C and 20.°C, respectively. What is the value of the activation energy?

-kJ/mol

2.) Iron(III) chloride is reduced by tin(II) chloride.

2 FeCl3(aq) + SnCl2(aq) ? 2 FeCl2(aq) + SnCl4(aq)
The concentration of Fe3+ ion at the beginning of an experiment was 0.03580 M. After 4.00 min, it was 0.02506 M. What is the average rate of reaction of FeCl3 in this time interval?

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