Cov txheej txheem:
- Pob cations form precipitates?
- Nyob rau hauv cov xwm txheej dab tsi yuav daim ntawv los nag?
- Koj paub li cas thaum daim ntawv nag los?
- Ntawm qhov concentration npaum li cas yuav los nag?
Video: Thaum twg cations tsim precipitates?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Ib nag lossis daus tuaj yeem tshwm sim thaum ob cov kev daws teeb meem uas muaj cov ntsev sib txawv sib xyaw, thiab ib khub cation / anion hauv cov tshuaj sib xyaw ua ke ua cov ntsev tsis txaus; cov ntsev no ces los nag los ntawm kev daws.
Pob cations form precipitates?
Ib nag xob nag cua yuav tsim yog tias ib qho kev sib xyaw ntawm cations thiab anions tuaj yeem ua ib qho khoom.
Nyob rau hauv cov xwm txheej dab tsi yuav daim ntawv los nag?
Ntxhais nag los tshwm sim thaum cations thiab anions hauv aqueous tov ua kelos ua ib qho khoom tsis sib haum ionic hu ua precipitate. Txawm hais tias qhov kev tshwm sim tshwm sim los yog tsis tuaj yeem txiav txim siab los ntawm kev siv cov cai solubility rau cov ionic solids.
Koj paub li cas thaum daim ntawv nag los?
Ib qho tshuaj ionic yog thaum cov ions ntawm ib qho chaw sib cais hauv cov tshuaj aqueous. Ib qho tshuaj tiv thaiv tshwm sim thaum koj sib tov ob lub ntsiab lus aqueous. Qhov no yog thaum koj paub tias cov nag lossis daus yuav tsim los yog tsis. Daim ntawv precipitate yog cov khoom ntawm cov tshuaj tiv thaiv ntawm cov ions yog insoluble hauv dej
Ntawm qhov concentration npaum li cas yuav los nag?
a nag lossis daus yuav tsim thiab yuav tsim mus ntxiv kom txog rau thaum cov ntsiab lus ntawm ions hauv cov tshuaj txo qis mus rau qhov taw tes uas Qsp=Ksp thaum lub kaw lus sib npaug. yuav tsis muaj nag lossis daus. Piv txwv li: Yog tias sib npaug ntawm 0.010 M K2SO4 thiab 0.10 M Pb(NO3)2 cov kev daws teeb meem sib xyaw, puas yuav ua rau daim ntawv precipitate?
Pom zoo:
Thaum twg tus neeg tsim khoom tsim tawm?
Raws li lwm qhov chaw, tus onager tau tsim nyob rau hauv tim Nkij teb chaws xyoo 385 BCE los ntawm tus kws kho tsheb Ammianus Marcellinus (Robert M. Jurga). Lub zog jerk thiab lub tshuab nqa ntawm txhua qhov kev txhaj tshuaj, Loos hu ua "
Puas tuaj yeem tsim cations nrog ntau tus nqi?
Ib ob peb lub ntsiab lus, tag nrho cov hlau, tuaj yeem tsim ntau dua li tus nqi them. Piv txwv li, hlau atoms tuaj yeem tsim 2+ cations lossis 3+ cations . Can Cr tsim cov cations nrog ntau tus nqi? A Vim tias chromium yog cov hlau hloov pauv, nws tuaj yeem tsim cov cations nrog cov nqi sib txawv Tus lej Roman qhia peb tias tus nqi zoo hauv qhov no yog +3, yog li cov cation yog Cr 3 + B Oxide is O 2 - Yog li ob cations (Cr 3 + ) thiab peb anions (O 2 − ) y
Qhov twg thiab thaum twg yog qhov chaw ua haujlwm ntawm thawj kws kho mob kws kho mob tau tsim?
Nyob rau hauv 44 BC, ntawm thawj qhov keeb kwm ntawm kev tshuaj ntsuam xyuas kab mob tshwm sim tam sim ntawd tom qab lub sleighing ntawm Julius Caesar los ntawm nws cov neeg koom tes. Tus kws tshuaj xyuas lub sijhawm ntawd xaus lus tias ntawm 23 qhov txhab pom ntawm lub cev tsuas yog ib tus neeg tuag xwb .
Thaum pas dej tsim nyog tsim?
Kev tsim kho ntawm Lake Tsim Tsim Dej tau pib hauv 1912. Kev txiav txim siab impoundment ntawm dej pib thaum Lub Rau Hli 1914 thiab lub pas dej tau ua tiav thaum Lub Kaum Hli 1914 . Vim li cas Lake Tsim Nyog? Lake Worth tau tsim nyob rau hauv 1914 ua lub reservoir thiab kev ua siCov cuab yeej yog los ntawm Lub Nroog Fort Tsim Nyog, thaum lub Tarrant Regional Water District tswj lub reservoir txoj cai dej.
Thaum twg tsim khoom tsim?
Thawj qhov kev hloov pauv loj hauv kev tsim khoom lag luam tau los thaum lub sijhawm peb tam sim no hu ua Industrial Revolution. Qhov no yog kev hloov pauv uas tshwm sim hauv 18th caug xyoo qhov twg, tsis yog cov khoom tsim los ntawm tes, cov txheej txheem tau tsim tawm uas tso cai rau cov khoom tsim los ntawm cov tshuab .
