Hydrogen peroxide yog aqueous tov ntawm hydrogen peroxide. Cov tshuaj formula ntawm hydrogen peroxide yog H2O2. Ntshiab hydrogen peroxide yog lub teeb xiav viscous kua, uas yog miscible nrog dej nyob rau hauv ib qho kev faib ua feem thiab yog ib tug muaj zog oxidant. Hydrogen peroxide yog cov kua tsis muaj xim thiab pob tshab, haum rau kev kho mob qhov txhab tua kab mob, tshuaj tua kab mob ib puag ncig, thiab tshuaj tua kab mob zaub mov. Raws li ib txwm muaj, nws yuav maj mam decompose rau hauv dej thiab oxygen, tab sis tus nqi decomposition qeeb heev.
Cov tshuaj hydrogen peroxide yog cov kua tsis muaj xim thiab pob tshab, soluble hauv dej, cawv, thiab ether, tab sis insoluble hauv benzene thiab roj av ether. Ntshiab hydrogen peroxide yog lub teeb xiav viscous kua nrog lub melting point ntawm -0.43 ° C thiab boiling point ntawm 150.2 ° C. Lub molecular configuration ntawm ntshiab hydrogen peroxide yuav hloov, yog li lub melting thiab boiling point kuj yuav hloov. Qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom yog 1.71g / cm³ Nws qib ntawm kev koom tes yog siab dua H2O, yog li nws cov dielectric qhov tsis tu ncua thiab kub kub yog siab dua dej.
Hydrogen peroxide decomposition
Npaj cov ntaub ntawv
Hydrogen peroxide (H2O2), manganese dioxide (MnO2), roj cylinder, beaker, ntoo sawb nrog sparks, roj generator (kua roj), gas sau ntaus ntawv (drainage) dab dej.
kev sim
Tom qab kuaj xyuas seb cov roj hmab stopper puas zoo kaw, ncuav ib qho tsim nyog ntawm hydrogen peroxide rau hauv lub hwj Erlenmeyer, thiab tom qab ntawd ntxiv manganese dioxide, uas yuav ua rau cov dej (hauv lub hwj Erlenmeyer) thiab oxygen. Nws tuaj yeem siv rau hauv lub tog raj kheej roj, thiab cov hlua ntoo nrog cov nplaim hluav taws tuaj yeem muab tso rau hauv lub tog raj kheej roj los saib seb cov ntoo strips puas rov ua dua. Yog hais tias lawv rov ignite, nws txhais tau hais tias cov pa yog oxygen.
Reaction sib npaug
2H₂O₂==2H₂O+O₂ (manganese dioxide sau rau ntawm qhov sib npaug)