
Jonu apmaiņas reakcijas
Authored by Zane Eglite
Chemistry
11th Grade
Used 2+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Kurš no dotajiem ir vājš elektrolīts?
H2S
H2SO4
FeSO4
K2S
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Kurā piemērā pareizi uzrakstīta vielas disociācija
K2SO4 → K2+ + SO4-
K2SO4 → K2+ + SO42-
K2SO4 → 2K+ + SO42-
K2SO4 → 2K+ + 4SO2-
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Kurā gadījumā notiek jonu apmaiņas reakcija?
Ja visas vielas ir stipri elektrolīti
Ja rekcijas laikā joni tiek aizvākti no reakcijas maisījuma
Ja visas vielas ir vāji elektrolīti
Ja reakcijas laikā vielas tiek maisītas
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jonu apmaiņas reakcija starp diviem sāļiem notiek, ja
Viena no izejvielām ir nešķīstoša
Reakcijas rezultātā viena vai abas vielas ir nešķīstošas
Abas izejvielas ir nešķīstošas
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Kurā gadījumā ir attēlots pareizs molekulārais vienādojums?
Ca(NO3)2+2NaOH→ Ca(OH)2 +2NaNO3
Ca(NO3)2+2NaOH→ Ca2+ + 2(OH)- +2Na+ + NO32-
Ca(NO3)2+NaOH→ Ca(OH)2 +NaNO3
Ca2+ +2OH-→ Ca(OH)2
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