
Kemi Frågor
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Felicia NA24G
Used 1+ times
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13 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
En natriumkloridlösning har en koncentration på 1,25 mol/dm3. Hur stor substansmängd natriumklorid finns det i 0,33 dm3 av lösningen?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Vilket pH får en lösning där koncentrationen oxoniumjoner är1,33 · 10–5mol/dm3?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
För att lösa upp en femkrona kan man använda salpetersyra, HNO3, med koncentrationen 8,0 mol/dm3. Skriv formeln för salpetersyrans protolys i vatten.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Koncentrerad salpetersyra har en koncentration på cirka 14 mol/dm3. Hur stor volym ska man ta av den koncentrerade salpetersyran om man vill tillreda 0,750 dm3 salpetersyra med koncentrationen 8,0 mol/dm3?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
I ett experiment tillsätts en lösning av kaliumbromid KBr(aq) till klorvatten Cl2(aq). Skriv oxidations-, reduktions- och redoxformlerna för den redoxreaktion som då sker.
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6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Det finns en syra används som ”batterisyra” (elektrolyt i bilbatterier) och bildar salter som kallas sulfater. Vilken syra är det? Ringa in ett alternativ.
Salpetersyra
Svavelsyra
Saltsyra
Fosforsyra
Ättiksyra
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vilket eller vilka av nedanstående ämnen är exempel på starka baser? Ringa in ett alternativ.
Ammoniak
Anilin
Alla ovanstående alternativ
Metylamin
Kaliumhydroxid
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