Question 5 K Cr2O7 can supply oxygen to oxidise pollutants

Last updated: 7/4/2023

Question 5 K Cr2O7 can supply oxygen to oxidise pollutants in a water sample If one kilogram of such water sample requires 20 ml of 0 1 MK Cr2O7 H what is the oxygen requirement of that water in ppm units Options a 96 ppm b 48 ppm c 24 ppm d 32 ppm