Ib qho ntawm qhov cuam tshuam hauv thawj kauj ruam ntawm kev kawm tshuaj cov qauv thiab cov hauv paus yog sau cov tshuaj tiv thaiv. Yog li, cov lus nug txog kev sib cuam tshuam ntawm CaCl2, H2SO4 tsis tau ntsib txawm tias ib ntus, tab sis ua haujlwm. Cia peb tsom xam lub ntsiab "teeb meem" cov ntsiab lus.
Sau qhov sib npaug molecular
Kev sib cuam tshuam ntawm calcium chloride (ntsev) thiab sulfuric acid pib los ntawm kev sib pauv hloov pauv.
Lub ntsiab lus ntawm qhov kev tawm tsam no yog:
- ob lub tebchaw (cov khoom pib);
- ob qhov kev sib txuas (cov khoom lag luam);
- ua tsis tiav ntawm cov khoom yooj yim.
Sib piv cov pab pawg reactive nrog ib leeg, cov reagents hloov, thiab qhov sib npaug yuav siv daim ntawv:
CaCl2 + H2SO4=CaSO4 + 2HCl.
Raws li koj tuaj yeem pom, ob yam tshuaj, hloov ions, tsim cov sib txawv kiag li: ntsev tshiab (CaSO4) thiab hydrochloric acid (HCl).
Txoj kev xau mus rau qhov kawg
Koj tuaj yeem teb cov lus nug no tau yooj yim los ntawm kev sau cov lus sib npaug ntawm cov qauv molecular rau CaCl2, H2SO4. Nws yuav nyob ntawm seb hom khoom. Cov txheej txheem mus txog qhov kawg ntawm kev kawm:
- sparingly soluble substance (precipitate);
- volatile compound (gas);
- qis dissociating reagent (dej, tsis muaj zog electrolyte).
Nyob rau hauv cov ntaub ntawv txiav txim siab rau CaCl2, H2SO4, ntawm cov tshuaj tiv thaiv cov khoom muaj calcium sulfate - ib tug tsis zoo soluble compound uas precipitates, raws li lub rooj.
Yog li ntawd, txoj kev sib pauv yuav mus rau qhov kawg.
Short ionic notation ntawm CaCl2, H2SO4
Piav txog txhua qhov sib xyaw ua ke rau hauv ions thiab txo cov pab pawg reactive, peb tau txais ob qhov kev sib npaug:
tag nrho ionic notation ntawm CaCl2, H2SO4
ca2+ + 2cl- + 2h+ + so 42-=caso4 + 2h+ + 2cl -
kev sib npaug sib luag
ca2+ + so42-=caso 4.
Nws yuav tsum nco ntsoov tias tsuas yog cov ntsev ntsev, kua qaub, cov hauv paus sau rau ions (qhov no yooj yim txiav txim siab los ntawm cov ntxhuav tshwj xeeb). Tsis muaj zog electrolytes zoo li carbonic acid los yog acetic acid ib txwm sau rau hauv daim ntawv molecular.
Tam sim no koj paub tias kev cuam tshuam ntawm calcium chloride (ntsev) thiab sulfuric acid tshwm sim li cas.
