27. Solving a chemistry problem
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27. Solving a chemistry problem
3. The rate constant of the direct reaction NH4SCN = (NH2)2CS at 25 C is equal to 7.66*10-7 min-1. The equilibrium constant at this temperature is 1.30. At the initial time, only ammonium thiocyanate is present. Determine the time it takes for 40% of the starting substance to react.
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