Answer:
1200 ml
Explanation:
Reducing the concentration to 2% means adding more water to dilute more solutes.
The relationship to apply is : c₁v₁=c₂v₂ where c is concentration and v is volume.
Given that
400 ml = v₁
0.08= c₁
0.02=c₂
v₂=?----find volume 2
400*0.08 =v₂*0.02
v₂=1600 ml
This means
400*0.08 =1600*0.02
Amount to be added to 400 ml to reach 1600 ml will be: 1600-400=1200 ml
