Ukuze uthole ukwaziswa sendlela yokuthola ukuhlanganisa indaba eningi ukwazi yonke umfundi

esikoleni i-chemistry Yiqiniso awusona isiqondiso ezethula kuya wesayensi oyinkimbinkimbi. Kusukela ekuqaleni, abafundi ozama ukuthola indlela yokuxazulula izinselelo design. Ake sithi ngesikhathi izigaba kokuqala, banayo ukusetshenziswa kancane esisebenzayo, kodwa uma umfundi wafunda, isibonelo, indlela yokuthola eziningi izinto unreacted, kungase abathi kahle ukuba impumelelo sina.

Cabangela isibonelo esilula yenkinga, ngesisekelo okuyinto ungafunda indlela yokuxazulula eziyinkimbinkimbi ngokwengeziwe. Ucabange ukuthi ngoba amandla omlilo ngokuphelele we-carbon monoxide (II) uthathe 11.2 amalitha. Zingaki amagremu CO2 wena ukwazi ukuthola?

1. yakha kwesibalo ukuphendula.

CO + O2 = CO2

2. nokulinganisa umoya-mpilo. Kukhona imithetho ethile, okuyinto ezimweni eziningi ingakusiza. Qala ukuhlela okuza into, inani okuyinto ama-athomu aphambene. Kulokhu, umoya-mpilo CO-molecule. Ukuyibeka isici 2. Kusukela kwesokunxele kwakhiwa athomu amabili-carbon, futhi kwesokudla - eyodwa, bese ukuletha CO2 2. Ngakho, sithola:

2CO + O2 = 2CO2

Njengoba ubona, ezinhlangothini kwesokudla noma kwesokunxele we athomu amane-mpilo. Carbon nalo elondolozwe ku ibhalansi. Ngenxa yalokho, thina equalized kwesokudla.

3. Okulandelayo, udinga ukuthola inani O2. Ukunqunywa mass yamangqamuzana kubafundi nzima kakhulu futhi kunzima ukukhumbula, ngakho sebenzisa indlela ehlukile. Khumbula ukuthi kukhona isamba izinyo lomhlathi okuyinto ilingana 22.4 l / imvukuzane. Udinga ukuthola indlela nezimvukuzane eziningi (n) sangena ukuphendula :. N = V / V m Esimweni sethu, labo n = 0,5 Mol.

4. Manje ukudweba bayingxenye. Inani le-oxygen okuyinto angena ukuphendula isigamu n (CO2). Lokhu kulandela ekutheni 0.5 amavukuzi / imvukuzane 1 = x / 2. Inani okulula amagugu ezimbili liye lasiza ezothando kwesokudla. Lapho sithola x = 1, singathola impendulo yombuzo othi kanjani ukuthola mass.

5. Iqiniso ukuqala kuyodingeka ukhumbule omunye ifomula: m = M * n. I variable odlule wathola, kodwa lokho okufanele ukwenze M? mass izinyo lomhlathi - is Ucwaningo setha isihlobo ukuba hydrogen. It is okhonjiswe incwadi M. Manje siyazi ukuthi m (CO2) = 12 g / Mol * 1 imvukuzane = '12 Lokho ngayithola impendulo. Njengoba ubona, akukho nzima.

Lo msebenzi Kulula kakhulu ku ezihlukahlukene abanye. Kodwa into - ukuba baqonde indlela ukuthola mass. Cabanga-molecule into. Sekuyisikhathi eside kwaziwa ukuthi uHlelo imvukuzane yakhiwa 6 * 10 ^ 23 ama-molecule. Ngesikhathi esifanayo in the lwezakhi isici kukhona isisindo olufakiwe ngayinye 1 Mol. Ngesinye isikhathi kuyadingeka ukubala mass izinyo lomhlathi we ketshezi. Ake sithi M (H20) = 18 amagremu / imvukuzane. Lokho, umuntu hydrogen-molecule has M = 1 igremu / Mol. Kodwa amanzi iqukethe ama-athomu amabili H. Futhi, ungakhohlwa mayelana nokuba khona komoya-mpilo, usinika ezengeziwe 16 amagremu. Efingqa, sithola 18 amagremu / imvukuzane.

I theory mass ukubala ngeke kamuva kube ukusetshenziswa esiwusizo. Ikakhulukazi abafundi balindele workshop zamakhemikhali. Ungesabi bezwi, uma ozifunda non-core esikoleni. Kodwa uma i-chemistry - kuncike iphrofayela yakho, kungcono ukusebenzisa imiqondo eyisisekelo. Ngakho, manje uyazi ukuthi ukuthola mass. Khumbula ukuthi ku-chemistry kubaluleke kakhulu ukuba indoda okungaguquki ukucabangela abangagcini nje uyazi ezinye algorithm, kodwa futhi uyazi ukuthi ukuzisebenzisa.