PRACTICE QUESTIONS ON pH AND pOH CALCULATIONS

CHOOSE THE CORRECT OPTIONS IN THE QUESTIONS BELOW.


Drop your answers into the COMMENT BOX.








QUESTION 1.


The range of values in a standard pH scale is...?



(A). 0 to 1



(B). 1 to 14




(C). 0 to 14




(D). 1 to 7












QUESTION 2.



A solution that resists change in its pH value when a very little quantity of an acid or a base is added to it is known as .....?



(A). Buffer acid




(B). Supersaturated solution




(C). Saturated solution




(D). Buffer solution.














QUESTION 3.


The expected pH value for a neutral solution is.....?



(A). 0



(B). 7



(C). 1




(D). 14















QUESTION 4.



Which of the following is the mathematical expression for pH of a solution?



(A). pH = –log [OH]



(B). pH = log [H^+]



(C). pH = log 1/[H^+]



(D). pH = – log 1/[H^+]














QUESTION  5.

Calculate the pH of a solution of H2SO4 whose concentration is 0.005M.


(A). 1


(B). 3



(C). 2



(D). none










QUESTION 6.


What is the pH of a solution of Can(OH)2 solution given that molarity of the solution is 0.0005M.




(A). 3


(B). 13


(C). 11



(D). none











QUESTION 7.


Calculate the pOH value of HCl acid solution which contains 14.6g of the acid in 40dm³ of solution.





(A). 1



(B). 13



(C). 2



(D). none











QUESTION 8.


Find the ionization constant value of a solution whose base ionization constant is 1.0x10^–¹²





(A). 1.0x10²




(B). 1.0x10^–³



(C). 1.0x10³




(D). 1.0x10^–²





QUESTION 9.


Calculate the of a buffer solution prepared by adding 3.2g of sodium ethanoate to 1dm³ of a 0.01mol/dm³ of ethanoic acid whose Ka value is 1.82x10^–5.



(A). 5.34



(B). 0.534



(C). 4.35



(D). 3.45















QUESTION 10.



Find the hydrogen ion concentration of an acid whose pH value is 1.89




(A). 0.3



(B). 0.003



(C). 0.13



(D). 0.013








DROP YOUR ANSWERS INTO THE COMMENT BOX.





Good luck.
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Unknown
May 26, 2020 2:28 pm

Josh_S
1. C
2. D
3. D
4. C
5. C
6. A
7. C
8.
9.
10. D

Unknown
May 26, 2020 2:27 pm

1. C
2. D
3. D
4. C
5. C
6. A
7. C
8.
9.
10. D

Unknown
May 26, 2020 1:58 pm

From Benitha
1)c
2)d
3)b
4)c
5)c
6)c
7)d
8)d
9)a
10)d

Unknown
May 26, 2020 12:21 pm

Blessed
1 C
2 D
3 B
4 C
5 C
6 C
7 D
8 D
9 A
10 C

Unknown
May 26, 2020 6:23 am

Marycynthia
1 C
2 D
3 B
4 C
5 C
6 A
7 C
8 D
9 A
10 A

Tycoons wurld
May 25, 2020 11:53 pm

1)C
2)A
3) B
4)C
5)C
6)A
7)C
8)B
9)C
10)D

Uchenna Stephen
May 25, 2020 9:38 pm

1. C
2. C
3. B
4. C
5. C
6. A
7. D
8. D
9. A
10. D

Unknown
May 25, 2020 5:26 pm

1)B
2)D
3)B
4)D
5)C
6)C
7)C
8)D
9)A
10)D

Precious Chima

Unknown
May 25, 2020 5:19 pm

1c
2d
3b
4a
5 c
6a
7b
8 a
9 b
10a

Unknown
May 25, 2020 4:01 pm

4. C

Unknown
May 25, 2020 3:51 pm

Name is Ann
1. C
2. D
3. B
4. Nil
5. C
6. C
7. D
8. 🤔
9. 🤔
10. D

Emmanuel okoro
Emmanuel okoro
May 28, 2020 3:13 am
Reply to  Unknown

Emmanuel o.
A
D
B
D
A
C
B
D
C
A

Plugstuck
May 26, 2020 5:39 pm

I will submit my answer next week.

THE CATALYST
Admin
May 26, 2020 9:11 pm

Review your works.

Isaac
Isaac
May 26, 2020 11:21 pm

1c
2d
3b
4c
5c
6c
7d
8d
9a
10d

Favour Ihezie
Favour Ihezie
May 27, 2020 12:49 pm

1 D
2 B
3 B
4 A
5 C
6 A
7 C
8 A
9 D
10 A

Precious Chinaza
Precious Chinaza
May 27, 2020 4:03 pm

1.C
2.D
3.B
4.ph=-log[H^+]
5.C
6.A
7.D
8.D
9.A
10.D

Joyce
May 28, 2020 1:32 am

Jodie
1.C
2.D
3.B
4.C
5.C
6.C
7.B
8.D
9.
10.A

Nnanna Peace
Nnanna Peace
May 28, 2020 6:22 am

1. C
2. D
3. B
4. D
5. C
6.A
7. C
8. D
9. A
10. D

Onuwabueze marvelous
Onuwabueze marvelous
May 28, 2020 7:34 am

Marvelous
1 a
2 b
3 b
4 c
5 c
6 c
7 b
8 d
9 a
10 d

Onyi
Onyi
May 28, 2020 1:16 pm

Onyi
1. C
2. D
3. B
4. C
5. D
6. D
7. No idea
8. No idea
9. No idea
10. D

Heymeka
Heymeka
May 28, 2020 9:44 pm

1. C
2. D
3. B
4. C
5. C
6. A
7. C
8. D
9. A
10. D

Rutzy
Rutzy
May 28, 2020 9:58 pm

1.c
2.d
3.b
4.c
5.c
6.c
7.d
8.a
9.a
10.d

THE CATALYST
THE CATALYST
June 13, 2020 10:58 am
Reply to  Rutzy

seen

Prosper
May 28, 2020 10:02 pm

1. C
2. D
3. B
4. B
5. C
6. C
7. D
8. D
9. A
10. D

Emmanoovic
Emmanoovic
May 29, 2020 10:01 am

1.C
2.A
3.B
4.C
5.C
6.A
7.B
8.B
9.C
10.D

Emmanoovic
Emmanoovic
May 29, 2020 10:02 am
Reply to  Emmanoovic

2.D

Unknown
May 29, 2020 10:56 am

Jodie
1.C
2.D
3.B
4.C
5.C
6.C
7.B
8.D
9.B
10.A

Derasin
May 29, 2020 12:09 pm

Déràsín
1.C
2.D
3.B
4.C
5.C
6.A
7.A
8.D
9.🤔
10.D

Okoro Sixtus emedaobi
Okoro Sixtus emedaobi
August 6, 2020 3:33 pm
Reply to  Derasin

Lol..wetin u day think 4 no 9

Ngozi
Ngozi
May 29, 2020 12:20 pm

1.C
2.D
3.B
4.C
5.C
6.A
7.B
8.A
9.A
10.D

Ugochukwu
May 29, 2020 2:45 pm

Ugochukwu

Ugo
Ugo
May 29, 2020 2:52 pm

1)B
2)D
3)B
4)D
5)C
6)C
7)C
8)D
9)A
10)D

Joyce
May 29, 2020 3:04 pm

1. C
2. B
3. B
4. C
5. C
6. C
7. D
8. D
9. C
10. A

Mevia Iheanacho
Mevia Iheanacho
May 29, 2020 4:58 pm

1. B
2. D
3. B
4. C
5. C
6. C
7. B
8. D
9. D
10. D

Mevia Iheanacho

Plugstuck
June 13, 2020 7:14 am

Awesome point! 👏

Xandra
May 29, 2020 5:55 pm

1:C
2:D
3:B
4:C
5:C
6:C
7:D
8: D
9: A
10:A

Major
May 29, 2020 8:06 pm

1c
2d
3b
4d
5c
6a
7c
8d
9b
10b

Benitha
Benitha
May 29, 2020 9:49 pm

1C
2D
3B
4C
5C

6A
7C
8B
9
10D

Orisakwe Emmanuel
Orisakwe Emmanuel
May 31, 2020 6:35 am

Orisakwe Emmanuel
1)C
2)D
3)B
4)C
5)C
6)C
7)D
8)D
9)A
10)D

Xandra
May 31, 2020 7:05 pm

Xandra
1:C
2:D
3:B
4:C
5:C
6:C
7:D
8: D
9: A
10:A

Onyeokoro chiamaka Stephanie
Onyeokoro chiamaka Stephanie
May 31, 2020 7:24 pm

1. C
2. D
3. B
4. A
5. C
6. A
7. D
8. D
9. A
10. A

Emmanuel
Emmanuel
June 2, 2020 5:00 am

1 C
2 D
3 B
4 C
5 C
6 C
7 B
8 D
9 nil
10 nil

CATALYST
CATALYST
June 5, 2020 7:55 am

Good

THE CATALYST
THE CATALYST
June 5, 2020 9:39 am

Good

Plugstuck
June 13, 2020 7:12 am

This is beautiful!

Obi ifunanya
Obi ifunanya
June 19, 2020 11:02 pm

1. C
2. D
3. B
4. C
5. C
6. C
7. D
8. D
9. A
10. D

47
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