Explain the presence of excess thiocyanate ion scn-

Reference no: EM13531538

In the presence of excess thiocyanate ion, SCN-, the following reaction is first order in chromium (III) ion, Cr3+; the rate constant is 2.0 x 10-6/s.

What is the half-life in hours? How many hours would be required for the initial concentration of Cr3+ to decrease to each of the following values:

25%

12.5%

6.25%

3.125%

Reference no: EM13531538

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