
RAZTOPINE - utrjevanje znanja

Quiz
•
Chemistry
•
9th Grade
•
Medium
Mateja Godec
Used 25+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
V štirih čašah imamo raztopine z različno koncentracijo glukoze. V kateri raztopini je največji masni delež glukoze?
V 200 g vode je raztopljeno 35 g glukoze.
V 400 g vode je raztopljeno 70 g glukoze.
V 200 g vode je raztopljeno 0,2 mol glukoze.
V 200 g vode je raztopljeno 3,0 ∙ 1023molekul glukoze.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolikšna je topnost neke soli, če je masni delež soli v nasičeni vodni raztopini 0,60?
40,0 g soli/100 g vode.
60,0 g soli/100 g vode.
66,7 g soli/100 g vode.
150,0 g soli/100 g vode.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolikšna je množinska koncentracija natrijevega hidroksida v raztopini, če je njegova masna koncentracija 20 g/L?
0,25 mol/L
0,50 mol/L
1,00 mol/L
2,00 mol/L
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Katera trditev o raztopinah je pravilna?
Topnost trdnih, tekočih in plinastih snovi narašča z višanjem temperature.
Hidratacija je endotermni proces.
Topnost plinov narašča z višanjem tlaka.
Intenzivno mešanje raztopine poveča topnost topljenca v topilu.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
K 60 mL 0,20 M raztopine NaCl smo dodali 500 mg trdnega NaCl in premešali. Kolikšna je množinska koncentracija NaCl v nastali raztopini? Zanemarite spremembo prostornine.
0,034 mol L–1
0,29 mol L–1
0,34 mol L–1
2,9 mol L–1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolikšno prostornino 70,0-odstotne raztopine žveplove kisline z gostoto 1,59 g mL–1potrebujemo za pripravo 2,5 L 0,50 M raztopine žveplove kisline?
0,08 L
0,11 L
0,14 L
0,17 L
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolikšno prostornino 30,0-odstotne raztopine natrijevega hidroksida z gostoto 1,33 g mL–1potrebujemo za pripravo 1,5 L 2,00 M raztopine natrijevega hidroksida?
0,017 L
0,030 L
0,30 L
0,33 L
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