In acidic aqueous solution the purple complex ion Co(NH3)5Br2+ undergoes a slow reaction in which the bromide ion is replaced by a water molecule yielding the pinkish-orange complex ion: Co(NH3)5(H2O)3+
Co(NH3)5Br2+Purple(aq)+H2O(l)? Co(NH3)5(H2O)3+Pinkish?orange(aq)+Br?(aq...
The reaction is first order in Co(NH3)5Br2+ the rate constant at 25 ?C is 6.3×10?6 s?1 and the initial concentration of Co(NH3)5Br2+ is 0.100 M.
A) Explain What is its molarity after a reaction time of 20.0h ?
B) Explain how many hours are required for 75% of the Co(NH3)5Br2+ to react?