Elektrokimyoviy jarayonlar

Mustaqil bajarish uchun masalalar.


1.Ca(OH)₂ 0.02 N eritmasining soloshtirma electr o`tkazuvchanligi λ<sub>c</sub>=1.3*10<sup>-2</sup> om <sup>-1</sup> sm<sup>-1</sup> . Bu eritmaning ekvivalent elektr o`tkazuvchanligini aniqlang. λ∞=132 om ^-1 sm²
2. Sirka kislata eritmasining solishtirma elektr o`tkazuvchanligi λ<sub>c</sub>=1.012*10<sup>-2</sup> om <sup>-1</sup> sm<sup>-1</sup> eritmaning dissosiyalanish darajasini aniqlang .(CH<sub>3</sub>COOH 0.011N) λ∞=120 om <sup>-1</sup> sm<sup>2</sup>
3.0.03N NH<sub>4</sub>OH eritmasing solishtirma elekrt o`tkazuvchanligi λ_c=1.03*10^-2 om ^-1 sm^-1 OH ^– ionlar konsentratsiyasini aniqlang . NH₄OH uchun λ∞=271 om ^-1 sm²
4. 0.01N Mg(OH)₂ eritmasining solishtirma elektr o`tkazuvchanligi λ<sub>c</sub>=1.2 ·10<sup>-4</sup>om<sup>-1</sup>sm<sup>-1</sup> . Bu eritmaning ekvivalent elektr o`tkazuvchanligini, dissosilanish darajasini va OH^- ionlar konsentratsiyasini toping. NH₄OH uchun _{ }=50 om^-1sm².
5. AgNO₃ eritmasi eliktroliz qilinganda , katodda 0.621g kumish ajralib chiqqan. Katod qismida, kumishga aylantirib xisoblaganda, 0.203g AgNO₃ kamaygan. Ag⁺ ionining tashish sonini xisoblab toping.
6. Cu(NO₃)₂ eritmasi eliktroliz qilinganda , katodda 0.7125g kumish ajralib chiqqan. Katod qismida, kumishga aylantirib xisoblaganda, 0.2064g Cu(NO₃)₂ kamaygan. Cu⁺² ionining tashish sonini xisoblab toping.
7.Cu(NO₃)₂ eritmasi eliktroliz qilinganda , katodda 0.5831g kumish ajralib chiqqan. Katod qismida, kumishga aylantirib xisoblaganda, 0.4013g Cu(NO₃)₂ kamaygan. NO₃ ^- ionining tashish sonini xisoblab toping.
8.Tarkibida 0.03% yod bo`lgan NaI eritmasi eliktroliz qilingan . Bu vaqtda anod kadmiy metalidan, katod esa platinadan yasalgan bo`lib, eliktr zanjiri kumish kulometr bilan ketma-ket ulanadi. Eliktroliz tamom bo`lganidan so`ng 220,5g anod qismida 0.08g yod, 120g katod qismida 0.12g yod, 185,76g o`rta (betaraf) qismida esa 0.020g yod borligi aniqlangan. Kulonometrga o`tirgan kumish miqdori 0.01782g yodga ekvivalent bo`lgan . NaI ionlarning tashish sonini xisoblab toping.
9. CCl₃COONa tuzi uchun: λ_∞=40 om ^-1 sm² . Bu tuz anioning tashish soni n_{_=}0,2_. KI tuzi uchun λ_∞= 110 om ^-1 sm² . Bu tuz kationi K⁺ ning tashish soni n₊=0.3 . CCl₃COOK tuzi uchun λ_∞ qiymatini toping.
10. (CCl₃COO)₂Mg tuzi uchun: λ_∞=12 om ^-1 sm² . Bu tuz anioning tashish soni n_{_=}0,4_. CaI₂ tuzi uchun λ_∞= 10 om ^-1 sm² . Bu tuz kationi K⁺ ning tashish soni n₊=0.6 . (CCl₃COO)₂Ca tuzi uchun λ_∞ qiymatini toping.
11. (CCl₃COO)₂Mg tuzi uchun: λ_∞=12 om ^-1 sm² . Bu tuz anioning tashish soni n_{_=}0,4_. CaI₂ tuzi uchun λ_∞= 10 om ^-1 sm² . Bu tuz kationi K⁺ ning tashish soni n₊=0.6 . CCl₃COO ^– ionining qo`zg`aluvchanligini toping.