Explain how to obtain a noticeable color from the formation

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

If 85.00% reaction is required to obtain a noticeable color from the formation of the Cr(SCN)2+ ion, how many hours are required?

Reference no: EM13531541

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