A water tower containing 4000 m³ of water that contained an initial concentration of free chlorine of 2 mg/L. Because of self-degradation or reactions with other species, free chlorine level declined over time following the first order kinetics with the rate constant of 1 d´1. What would be the concentration of free chlorine in water after 6 hours? O A. 15.6 mg/L O B. 1.56 mg/L O C. 0.156 mg/L O D. 0.015 mg/L

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A water tower containing 4000 m³ of water that contained an initial concentration of free chlorine of
2 mg/L. Because of self-degradation or reactions with other species, free chlorine level declined over
time following the first order kinetics with the rate constant of 1 d1. What would be the
concentration of free chlorine in water after 6 hours?
O A. 15.6 mg/L
O B. 1.56 mg/L
O C. 0.156 mg/L
O D. 0.015 mg/L
Transcribed Image Text:A water tower containing 4000 m³ of water that contained an initial concentration of free chlorine of 2 mg/L. Because of self-degradation or reactions with other species, free chlorine level declined over time following the first order kinetics with the rate constant of 1 d1. What would be the concentration of free chlorine in water after 6 hours? O A. 15.6 mg/L O B. 1.56 mg/L O C. 0.156 mg/L O D. 0.015 mg/L
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