Q.
Half litre each of three samples of H2O2 labelled 10vol,15vol,20vol are mixed and then diluted with 1700 ml of water. Calculate relative strength of resultant H2O2 solution
Volume strength of H2O2=5.6×N 10Vol.H2O2=5.610NH2O2 15Vol.H2O2=5.615NH2O2 20Vol.H2O2=5.620NH2O2
Let 500mL of each is mixed then total volume of mixture =1500mL
Also this is diluted with 1700ml, so total volume becomes 3200 ml N×3200=5.610×500+5.615×500+5.620×500
or NH2O2 mixture=5.6×3200500×45=1.255 ∴ Vol. strength of H2O2=1.255×5.6=7.03