chelseybridges5970 chelseybridges5970 30-05-2024 Chemistry Answered In the presence of excess thiocyanate ion, SCN⁻, the following reaction is first order in iron(III) ion, Fe²⁺; the rate constant is 1.27/s.Fe³⁺(aq)+SCN⁻(aq)→Fe(SCN)²⁺(aq)a. What is the half-life in seconds?