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gen chem 2 - acid/bases

Total questions: 52

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

what is the pH of an acid

a)

1-6

b)

7

c)

8-14

2.

what is the pH of a base

a)

1-6

b)

7

c)

8-14

3.

what is a conj acid

a)

adding a Hydrogen

b)

removing a Hydrogen

4.

what is a conj base

a)

adding a hydrogen

b)

removing a hydrogen

5.

pOH+pH=

a)

7

b)

0

c)

15

d)

14

6.

-log [H3O] =

a)

pOH

b)

pH

c)

acid

d)

base

7.

-log[OH] =

a)

pH

b)

pOH

c)

acid

d)

base

8.

10-pH =

a)

pOH

b)

pH

c)

H3O

d)

OH

9.

10-pOH =

a)

pOH

b)

pH

c)

H3O

d)

OH

10.

What is the conjugate base of HCN?

a)

HCN

b)

H2CN+

c)

CN-

d)

H2O

11.

What is the conjugate acid of NH3?

a)

NH3

b)

NH4+

c)

NH2-

d)

H2O

12.

The conjugate base of H2SO4 is ___.

a)

H2SO3

b)

HSO4-1

c)

H3SO4+1

d)

SO4-2

13.

What is the conjugate base of HCl in the following reaction?

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

14.

how many strong acids are there

(a)  

15.

how many strong bases are there

(a)  

16.

If the [H3O+] of a solution is 1 x 10-3 M, the pH is

a)

11

b)

-3

c)

3

d)

1

17.

Oranges have a [H3O+] of 1.7 x 10-2 M. Their pOH is

a)

1.77

b)

12.23

c)

10.91

d)

3.09

18.

If the pH of a solution is 8 the [H3O+] is

a)

1.0 x 106 M

b)

8.0 x 101 M

c)

1.0 x 108 M

d)

1.0 x 10-8 M

19.

What is the [OH-] if the [H+] is 1.0 x 10-3M?

a)

1.0 x 10-3 M

b)

1.0 x 10-14 M

c)

6.02 x 10-23 M

d)

1.0 x 10-11 M

20.

If a solution has a very high pH, the hydroxide concentration is _______.

a)

very high

b)

very low

c)

zero

21.
HCl is a __________.
a)
Weak acid
b)
Strong acid
c)
Weak base
d)
Strong base
e)
Neutral
22.

Which type of acid/bases dissociate completely?

a)

strong

b)

weak

23.
A strong acid:  
a)
completely dissociates in water
b)
partly dissociates in water
c)
doesn't dissociate in water
d)
has a really high pH
24.

Fe(OH)2Fe\left(OH\right)_2

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

25.

HI

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

26.

HNO3HNO_3

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

27.

HC2H3O2HC_2H_3O_2

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

28.

HClO4HClO_4

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

29.

NH3NH_3

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

30.

H2SO4H_2SO_4

a)

strong acid

b)

weak acid

c)

strong base

d)

weak base

31.

Which of the following is considered a strong base?

a)

NH3NH_3 (Ammonia)

b)

HClHCl (Hydrochloric acid)

c)

NaOHNaOH (Sodium hydroxide)

d)

CH3COOHCH_3COOH (Acetic acid)

32.

A solution with a pH of 12 is:

a)

Neutral

b)

Acidic

c)

Basic

d)

A buffer

33.

What is the pH of a 1.35x10-2 M aqueous solution of HX if its Ka, is equal to 1.1x10-3g

a)

2.48

b)

5.11

c)

7.20

d)

9.46

34.

For which of the following is the equilibrium constant called the " Kb of PO43- "

a)

PO4-3(aq) + H2O(l) → HPO4-2} (aq) + OH (aq)

b)

H3PO4(aq) + H2O(l) → H2PO4 (aq) + H30(aq)

c)

HPO4 (aq) + H20(l) → PO3-(aq) + H30(aq)

d)

HPO42(aq) + H20(l) →H2P04 (aq) + OH (aq)

35.

If the Kb of base X2- is 7.96x10-10, then the Ka of its conjugate base is

a)

1.58x10-5

b)

6.33x104

c)

1.26x10-5

d)

7.96x104

36.

If the Ka of acid HX is 1.89x10-5

then the Kb of its conjugate base is...

a)

5.29x10-10

b)

  • 6.61x10-10

c)

  • 1.51x109

d)

  • 1.89×109

37.

The pH of a 4.13x10-2 M solution of B(aq) is 11.403. Calculate the Kb.

a)

1.65×10-4

b)

  1. 1.55x10-4

c)

  1. 1.40x10-4

38.

A buffer is made up of 566 mL of 0.750 M HC3H5O3 and 665 mL of 0.727 M NaC3H5Оз.

Calculate the pH of the buffer after the addition of 0.149 mol of HCl.

Ka for HC3H503 = 1.4 × 10-4

a)

7.00

b)

3.62

c)

6.98

d)

9.10

39.

how do you solve for Kw

a)

Kw= Ka x Kb

b)

Kw = Ka + Kb

c)

Kw = Ka - Kb

d)

Kw = Ka / Kb

40.

(acid conc.)/Ka > 100 means what?

a)

the Ka is weak

b)

i dont know

c)

we can neglect x

d)

we CANNOT neglect x

41.

What is the conjugate base of HCl in the following reaction?

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

42.

What is the conjugate base of HCN?

a)

HCN

b)

H2CN+

c)

CN-

d)

H2O

43.

What is the conjugate acid of NH3?

a)

NH3

b)

NH4+

c)

NH2-

d)

H2O

44.

An Acid who gives away a proton is now

a)

a conjugate acid

b)

a conjugate base

c)

an acid

d)

a base

45.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
46.
What is the conjugate base in the following reaction?
a)
HCO3- 
b)
HCl
c)
 H2CO3 
d)
Cl-
47.

What is the pH of a solution with a [H3O+] of 3.2 x 10-4 M?

a)

10.51

b)

7.00

c)

4.49

d)

3.49

48.

Which of the following is a weak acid?

a)

H2SO4

b)

HNO3

c)

CH3COOH

d)

HCl

49.

What is the conjugate acid of HCO3-?

a)

CO32-

b)

H2CO3

c)

HCO3-

d)

H2O

50.

What is the pH of a solution with a [OH-] of 2.5 x 10-5 M?

a)

10.40

b)

7.00

c)

4.60

d)

9.40

51.

Which of the following is a strong base?

a)

NaOH

b)

NH3

c)

CH3COOH

d)

H2O

52.

What is the conjugate acid of HCO3-?

a)

H2CO3

b)

CO32-

c)

HCO3-

d)

H2O

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