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Acizi si baze

Authored by Madalina Grosu

Education

1st - 5th Grade

Acizi si baze
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9 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Valoarea pH-ului unei soluţii de HCl de concentraţie 0,01 mol/L este:

1

2

11

12

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

[HO-] pentru soluţia care are pH = 8, este:

10-6 mol/L

10-8 mol/L

100 mol/L

10-14 mol/L

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Valoarea pH-ului unei probe biologice în care [HO-] = 10-12 mol/L, este:

3

12

2

1

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Soluţia pentru care [H3O+] = 10-5 mol/L prezintă caracter:

acid

bazic

neutru

amfoter

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Soluţia apoasă al cărui pH = 3 are [H3O+] egală cu: 

3 mol/L

1 mol/L

10-3 mol/L

10-11 mol/L

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Baza conjugată acidului cianhidric este:

CO3-2

HCO3-

Cl-

CN-

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Baza conjugată speciei chimice cu formula HCO3- , este:

CO3-2

H2CO3

HCl

CN-

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