hydrogen peroxide is used as a cleaning agent in treatment of cuts and abrasions
ID: 786808 • Letter: H
Question
hydrogen peroxide is used as a cleaning agent in treatment of cuts and abrasions for several reasons. In the laboratory, small quantities of hydrogen peroxide can be prepared by the action of an acid on an alkaline earth metal peroxide, such as barium peroxide: BaO2(s)+2HCl(aq)=H2O2(aq)+BaCl2(aq); what amount of hydrogen peroxide should result when 1.50g of barium peroxide is treated with 25.0ML of hydrochloric acid solution containing 0.0272 g of HCl per ML? what mass of which reagent is left unreacted?
Explanation / Answer
no of moles of BaO2=1.50/169.33=0.008584MOLES MOLES OF HCl= 1 mole of a bao2 requires 2 moles of hcl i.e 0.00858 moles of bao2 require 0.01716 moles of HCl so bao2 is limiting agent amount of hcl left=0.0186-0.01716=0.0686moles b)8.858*10^-3mol barium peroxide react with 2*8.858*10^-3mol HCl and produce 8.858*10^-3mol H2O2
H2O2 produced=8.858*10^-3*34=0.30117grams
H2O2 produced=Related Questions
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