The concentration of hydrogen peroxide in an antiseptic solution was determined by titration with 0.0200 M potassium permanganate solution. 20.00 mL of the peroxide solution was
diluted to 250 mL. 20.00 mL aliquots of the diluted solution were acidified and titrated with the
potassium permanganate solution. An average volume of potassium permanganate about
18.93 mL was required. The concentration of the hydrogen peroxide solution after dilution was

2Mn0, (aq) + 5H2O2(aq) + 6H* (aq) + 2Mn2+ (aq) + 8H20(1) + 502(g)

air quality

poor drinking water

and heavy polution

can lead to poor health

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

the dissolution of polymer can be thermodynamically described in 2 steps.