(Solution) - In the presence of excess thiocyanate ion SCN the following -(2025 Original AI-Free Solution)

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In the presence of excess thiocyanate ion, SCN, the following reaction is first order in iron(III) ion, Fe3+; the rate constant is 1.27/s.
Fe3+(aq) + SCN(aq) ? Fe(SCN)2+(aq)
If 90.0% reaction is required to obtain a noticeable color from the formation of the Fe(SCN)2+ ion, how many seconds are required?