Namanganmuhandislik-teхnologiya instituti

Tajriba 1.
Qalay(11) xlorid eritmasini elektrolizi.

U – simon nayning (elektrolizerning) ¾ hajmigacha stanum xlor(11)ning eritmasidan quying va unga grafit elektrodlar tushirib, ularni o’zgarmas tok manbaiga ulang. Katoda ajralayotgan yaltiroq qalay metallining kristallari grafit elektrodga o’tishini kuzating. Katoda qanday jarayon sodir bo’ladi? Katod va anoda borayotgan reaktsiya tenglamalarini yozing va xisobotga kiriting.

Tajriba 2.
Kaliy yodid eritmasining elektrolizi.
Elektrolizerga KI eritmasini quyib, unga 3-4 tomchi fenolftolein va
1-2 tomchi yangi tayerlangan kraxmal eritmasidan qo’shing. Eritmani aralashtirib, unga grafit elektrodlarini tushiring va ularni tok manbaiga ulang.
Katod va anod atrofida eritmalar rangining o’zgarishini kuzating. KI eritmasining elektroliz sxemasini yozing va xisobotga kiriting.


laboratoriya ishini
X I S O B O T I
Quyidagi tushunchalarni izoxlang:
Elektroliz___________________________________________________________________________________________________________________________________________________
Jarayonning | katodda (-) ________________________________________
nomi | anodda (+) _________________________________________
Erimaydigan anod__________________________________________________
Eriydigan anod ____________________________________________________

Suv ishtirokida elektroliz jarayonini tenglamasi

katodda(-)________________________pH________________ anodda (+)________________________pH________________

Faradey qonunlarining matematik ifodasi: __________________________________________________________________

Tajriba 1. Qalay (11) xlorid eritmasini elektrolizi.

Tuz dissotsiyalanish tenglamasi______________________________________

Katodda(-)__________hosil bo’ladi . Tuz kationi_______guruxga tegishli.

Jarayon tenglamasi_______________________________________________

Anodda(+)__________hosil bo’ladi . Tuz anioni_______guruxga tegishli.

Jarayon tenglamasi_______________________________________________
KI qo’shilganda anod atrofida eritmani rangi______________________bo’ladi,
shunda reaktsiya quyidagicha KI + Cl₂ = __________________________________
Tajriba 2.Kaliy yodid eritmasining elektrolizi.

Tuz dissotsiyalanish tenglamasi_______________________________________

Tuz kationi_______guruxga tegishli.
Jarayon tenglamasi___K(-)___________________________________________
Eritmani rangi_____________, muhit( rN)_______________________________
Jarayon tenglamasi___A(+)___________________________________________
Eritmani rangi__________________.