Vil denne ændring gøre opløsningen mere sur eller mere basisk?

pH, syre/base reaktioner og konjugerede syre/base par

Quiz
•
Chemistry
•
12th Grade
•
Hard
Used 18+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vil denne ændring gøre opløsningen mere sur eller mere basisk?
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
En opløsning starter ved pH 5.5, og derefter bliver koncentrationen af hydrogenioner reduceret med en faktor på 10.
Hvad sker der med opløsningens pH-værdi?
pH falder
Man ved ike nok om system til at kunne svare.
pH er uændret
pH stiger
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvad er opløsningens nye pH-værdi?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvad opløsningens nye pOH-værdi, hvis opløsningen er 25 grader C varm? (pH-værdien var 6.5)
8.5
5.5
7.5
6.5
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
En opløsning fremstilles ved at fortynde 10,0 g salpetersyre (HNO3, Molar masse = 63.01 g/mol) med vand,
til et totalvolumen på 250 mL.
Hvad vil pH-værdien af denne opløsning være?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
C4H4O4(aq) + H2O(l) --> H3O+(aq) + C4H3O4- (aq)
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
C6H5NH3+(aq) + H2O(l) --> C6H5NH2(aq) + H3O+(aq)
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