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HaiLeY
Lv 4
HaiLeY asked in Science & MathematicsChemistry · 1 decade ago

H2O2(aq) + 2H2o(l) + O2(g)?

What volume of O2(g) collected at 27 degrees C and 746 torr, would be generated by decomposition of 125g of a 50% by mass hydrogen peroxide solution?

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  • steve_geo1
    Lv 7
    1 decade ago
    Favorite Answer

    Atomic weights: H=1 O=16 O2=32 H2O2=34 27C=300K

    2H2O2 ===> 2H2O + O2

    Let the solution be called S

    125gS x 50gH2O2/100gS x 1molH2O2/34gH2O2 x 1molO2/2molH2O2 x 22.4LO2/1molO2 x 760torr/746torr x 300K/273K = 23 L O2

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