Obecná chemie 151-200

Obecná chemie 151-200

University

50 Qs

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Obecná chemie 151-200

Obecná chemie 151-200

Assessment

Quiz

Life Skills

University

Hard

Created by

Plzen Chemie

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50 questions

Show all answers

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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