Video: Dab tsi yog 2 yam uas tsim los ntawm neutralization?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub Arrhenius txhais ntawm lub hauv paus yog ib yam khoom uas ua rau kom muaj OH − nyob rau hauv ib tug aqueous tov. Neutralization yog cov tshuaj tiv thaiv ntawm cov kua qaub thiab lub hauv paus, uas tsim dej thiab ntsev. Net ionic sib npaug rau neutralization Cov tshuaj tiv thaiv muaj xws li cov kua qaub, cov hauv paus, cov ntsev, thiab dej.
Ua li no, ob yam khoom ntawm neutralization cov tshuaj tiv thaiv yog dab tsi?
Cov tshuaj tiv thaiv neutralization tshwm sim thaum ob lub reactants, ib qho kua qaub thiab lub hauv paus, ua ke los tsim cov khoom ntsev thiab dej.
Tom qab, lo lus nug yog, dab tsi yog tsim los ntawm lub cev los pab neutralize acidic tej yam kev mob? Txhawm rau ua qhov no, lub lub cev tsim tawm buffers uas tau neutralize kua qaub. Acid thiab yooj yim tej yam kev mob hauv lub cev tshwm sim vim qhov sib txawv metabolic (tshuaj lom neeg) tshwm sim nyob thoob plaws hauv lub lub cev . Buffers neutraliz lacids nyob rau hauv lub cev.
Tsis tas li ntawd, dab tsi yog tsim nyob rau hauv cov tshuaj tiv thaiv neutralization?
A neutralization cov tshuaj tiv thaiv yog thaum lub acid thiab lub hauv paus teb tsim dej thiab ntsev thiab koom nrog kev sib xyaw ntawm H+ ions thiab OH- ions los tsim dej. Thaum muaj kev daws teeb meem neutralized , txhais tau hais tias ntsev yog tsim los ntawm qhov sib npaug ntawm cov kua qaub thiab lub hauv paus.
Vim li cas cov dej molecule tseem ceeb heev rau lub cev?
cov dej ua raws li cov kuab tshuaj rau cov tshuaj tiv thaiv kab mob thiab tseem pab thauj cov tshuaj yaj hauv thiab tawm ntawm lub hlwb. lub npe muab rau kom muaj peev xwm ntawm ib qho kev daws teeb meem aqueous rau neutralize. bing acidic los yog yooj yim daws yuav ua rau lawv mus rau denature.
Pom zoo:
Dab tsi yog lub npe ntsev tsim los ntawm neutralization ntawm hydrochloric acid thiab sodium hydroxide?
Kev piav qhia: Cov tshuaj tiv thaiv ntawm sodium hydroxide (NaOH) thiab hydrochloric acid (HCl) yog cov tshuaj tiv thaiv nruab nrab uas ua rau muaj ntsev, sodium chloride (NaCl), thiab dej (H2O). Nws yog ib qho tshuaj tiv thaiv exothermic
Dab tsi yog cov hlau nplaum uas ua los ntawm qhov kev npaj ntawm electrons yog dab tsi?
Electrons yog teem rau hauv plhaub thiab orbitals nyob rau hauv ib tug atom. Yog hais tias lawv sau lub orbitals kom muaj ntau spin taw tes rau hauv qab (los yog vice versa), txhua atom yuav ua zoo li ib tug me me hlau nplaum. Thaum ib daim ntawm cov hlau tsis muaj hlau nplaum (lossis lwm yam khoom siv ferromagnetic) raug rau sab nraud magnetic teb, ob yam tshwm sim
Dab tsi yog qhov tseeb ntawm cov ntsev tsim nyob rau hauv cov tshuaj tiv thaiv neutralization ntawm hydrochloric acid nrog barium hydroxide?
Lus Nug: Dab tsi yog cov qauv ntawm cov ntsev tsim nyob rau hauv Neutralization Reaction ntawm Hydrochloric Acid Nrog Barium Hydroxide? BaCl BaCl2 BaClH BaH2 BaO
Qhov kev sib npaug twg yog qhov tsim nyog los suav cov cua sov uas tsim los ntawm HCl NaOH cov tshuaj tiv thaiv?
Xam cov naj npawb ntawm moles ntawm lub hauv paus koj ntxiv los txiav txim siab molar tshav kub ntawm qhov nruab nrab, qhia siv qhov sib npaug Δ H = Q ÷ n, qhov twg 'n' yog tus naj npawb ntawm moles. Piv txwv li, xav tias koj ntxiv 25 mL ntawm 1.0 M NaOH rau koj HCl los ua kom muaj cua sov ntawm nruab nrab ntawm 447.78 Joules
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms