
Obecná chemie 151-200
Quiz
•
Life Skills
•
University
•
Hard
Plzen Chemie
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaká je koncentrace roztoku NaOH, je-li jeho pH = 12 ?
0,1 mmol/l
1 mmol/l
10 mmol/l
100 mmol/l
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaká je hmotnostní koncentrace roztoku NaOH (M = 40,0 g/mol), je-li jeho pH = 12 ?
0,4 g/l
4 g/l
40 g/l
3,33 g/l
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaká je hodnota iontového soucinu vody pri 25°C?
14
7
10-7 mol/l
10-14 mol/l
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaká je koncentrace OH iontů v čisté vodě?
7
větší než 10-7mol/l
10-7 mol/l
menší než 10-7 mol/l
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co platí pro čistou vodu?
[H+] > [OH-]
[H+] = [OH-]
[H+] < [OH-]
[H+] = 7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co platí pro vodné roztoky kyselin?
[H+] > 10-7 mol/l
[H+] = [OH-]
[H+] < [OH-]
[OH-] > 10-7 mol/l
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co platí pro vodné roztoky zásad?
[H+] > 10-7 mol/l
[H+] = [OH-]
[H+]>[OH-]
[OH-] > [H+]
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