Video: Lub peev xwm ntawm calomel electrode yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
SCE peev xwm
Tab sis txij li thaum cov tshuaj sab hauv yog saturated nrog poov tshuaj chloride, qhov kev ua no yog tsau los ntawm solubility ntawm poov tshuaj chloride, uas yog: 342 g / L74.5513 g / mol = 4.587 M @ 20 ° C. Qhov no muab SCE ib peev xwm ntawm + 0.248 V vs.
Tib neeg kuj nug, tus qauv peev xwm ntawm tus qauv calomel electrode yog dab tsi?
Cov txheem peev xwm rau qhov tshuaj tiv thaiv no yog + 0.268 V. Yog hais tias lub cell yog saturated nrog KCl ntawm 25 ° C, peev xwm yog +0.241 V. A Calomel electrode saturated nrog KCl yog hu ua saturated Calomel electrode , abbreviated S. C. E. (thiab duab rau sab xis).
Tsis tas li ntawd, vim li cas KCl siv hauv calomel electrode? KCl cov tshuaj yog zoo li lub reservoir ntawm chloride ions.. thaum lub electrode ua raws li anode, mercury reacts nrog cov ions thiab tsim mercurous chloride whereas thaum nws ua raws li ib tug cathode, mercurous chloride txo mus rau mercury thiab chloride ions raug xa mus rau lub cathode. KCl txheej..
Dhau li ntawm no, vim li cas thiaj muaj peev xwm ntawm calomel electrode tas li?
Qhov txo qis tshwm sim tshwm sim ntawm Calomel electrode sib raug rau qhov txo qis ntawm mercury (I). Cov peev xwm ntawm Calomel electrode nyob ntawm kev ua chloride ion, tab sis qhov no yog khaws cia tas li , thiab saturated, vim tam sim no ntawm ntau tshaj Cl– nyob rau hauv undissolved KCl crystals.
Dab tsi yog qhov zoo ntawm calomel electrode?
Qhov zoo ntawm calomel electrode : Tsis muaj kev sib cais ntsev yuav tsum tau vim nws twb muaj ib sab raj uas muaj KCl tov. Muaj peev xwm tsis hloov pauv nrog lub sijhawm thiab kev hloov pauv me ntsis hauv qhov kub thiab txias.
Pom zoo:
Lub peev xwm ntawm lub pendulum yog dab tsi?
Ib qho yooj yim pendulum muaj ib qho loj dai los ntawm ib txoj hlua uas tsis muaj zog uas nyob ze ntawm ib qho pivot. Gravitational muaj peev xwm zog (GPE) yog lub zog vim txoj hauj lwm uas sib npaug rau mgh qhov twg h yog qhov siab sib txawv ntawm nws qhov qis tshaj plaws mus rau qhov chaw uas nws tau tsiv mus rau
Dab tsi yog qhov txawv ntawm electrostatic muaj peev xwm thiab electrostatic muaj peev xwm zog?
Tsis muaj qhov sib txawv ntawm electrostatic potentialenergy thiab hluav taws xob (al) muaj peev xwm zog. Lub peev xwm hluav taws xob ntawm ib qho taw tes yog kev ua haujlwm los ntawm lwm qhov kev quab yuam hauv kev txav chav tsev zoo los ntawm ib qho arbitrarilychosen xoom ntawm lub peev xwm (feem ntau infinity) mus rau lub ntsiab lus
Puas muaj peev xwm hluav taws xob thiab lub zog muaj peev xwm tib yam Vim li cas lossis vim li cas ho tsis?
Lub zog muaj peev xwm hluav taws xob Ue yog lub zog muaj peev xwm khaws cia thaum cov nqi tawm ntawm qhov sib npaug (xws li lub zog muaj peev xwm gravitational). Lub peev xwm hluav taws xob zoo ib yam, tab sis ib tus nqi, Ueq. Ib qho hluav taws xob muaj peev xwm sib txawv ntawm ob lub ntsiab lus hu ua voltage, V = Ue2q−Ue1q
Dab tsi yog cov qauv ntawm lub zog nyob rau hauv lub peev xwm thiab lub zog kinetic?
Lub zog muaj peev xwm yog khaws cia lub zog thiab lub zog ntawm txoj haujlwm - lub zog gravitational. Muaj ntau hom kev muaj peev xwm muaj zog. Kinetic zog yog kev txav - ntawm nthwv dej, electrons, atoms, molecules, tshuaj, thiab khoom. Chemical Zog yog lub zog khaws cia hauv cov khoom sib txuas ntawm atoms thiab molecules
Puas muaj peev xwm equilibrium zoo ib yam li so muaj peev xwm?
Qhov sib txawv ntawm daim nyias nyias muaj peev xwm thiab qhov muaj peev xwm sib npaug (-142 mV) sawv cev rau lub zog hluav taws xob hluav taws xob uas tsav Na + mus rau hauv lub xovtooj ntawm lub peev xwm so membrane. Thaum so, txawm li cas los xij, qhov permeability ntawm daim nyias nyias mus rau Na + tsawg heev kom tsuas yog me me Na + xau rau hauv lub cell