In the presence of excess thiocyanate ion, SCN, the following reaction is first order in iron(III) ion, Fe, . The rate constant is 1.27/5. Fe3+(aq)+SCN(aq)Fe(SCN)2+(aq) If 22.4% of the reaction is required to obtain a noticeable color from the formation of the Fe(SCN) 2+ ion, how many seconds are required? Time = 19 isam stitmots remaining