
Kemi Frågor och Beräkningar
Authored by Felicia NA24G
Chemistry
10th Grade
Used 1+ times

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13 questions
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1.
OPEN ENDED QUESTION
15 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? (1p)
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2.
OPEN ENDED QUESTION
15 mins • 1 pt
Vilket pH får en lösning där koncentrationen oxoniumjoner är 1,33 · 10–5mol/dm3? (1p)
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3.
OPEN ENDED QUESTION
15 mins • 1 pt
För att lösa upp en femkrona kan man använda salpetersyra, HNO3, med koncentrationen 8,0 mol/dm3. a. Skriv formeln för salpetersyrans protolys i vatten. (1p)
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4.
OPEN ENDED QUESTION
15 mins • 2 pts
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? (1p)
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5.
OPEN ENDED QUESTION
15 mins • 3 pts
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. (3p)
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6.
MULTIPLE CHOICE QUESTION
15 mins • 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. (1p)
Svavelsyra
Fosforsyra
Salpetersyra
Saltsyra
Ättiksyra
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Vilket eller vilka av nedanstående ämnen är exempel på starka baser? Ringa in ett alternativ. (1p)
Alla ovanstående alternativ.
Ammoniak
Anilin
Metylamin
Kaliumhydroxid
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