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Unit 3 Test Review

Total questions: 31

Worksheet time: 49mins

Name
Class
Date
1.

Taste of acid is

a)

Bitter

b)

Soupy

c)

Sour

d)

Sweet

2.
A base has a ___________ taste.
a)
bland
b)
salty
c)
bitter
d)
sour
3.
A neutral substance would have pH of...
a)
8
b)
7
c)
6
d)
14
4.
Which has a pH above 7?
a)
Acid
b)
Base
5.
Which has a pH below 7?
a)
Acid
b)
Base
6.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
7.
Neutralization reactions
a)
formed from joining positive and negative ions 
b)
increases OH ions
c)
froms a salt and water
d)
increases H2O ions
8.

Is the following compound an acid or a base?


HCl

a)

Acid

b)

Base

9.

Is the following compound an acid or a base?


NH4OH

a)

acid

b)

base

10.

Is the following compound an acid or a base?


HI

a)

acid

b)

base

11.

Is the following compound an acid or a base?


H3PO4

a)

acid

b)

base

12.

2SO2(g)+O2(g) ⇌ 2SO3(g) + Heat


Increasing the temperature will...

a)

shift equilibrium right

b)

shift equilibrium left

c)

increase pressure

d)

have no change

13.

CoCI42- +6H2O →Co(H2O)62+ + 4CI-.


What would happen when H2O is added?

a)

Position of equilibrium will shift to left

b)

Position of equilibrium will shift to right

c)

Keq will increase as H2O is added

d)

Position of equilibrium will shift to left to reduce the added H2O

14.

2SO2(g)+O2(g) ⇌ 2SO3(g) + Heat


Adding SO3(g) will

a)

shift equilibrium right

b)

shift equilibrium left

c)

increase K

d)

have no change

15.
Solution where more solute can still be dissolved at the given temperature. 
a)
Saturated
b)
Unsaturated
c)
Mixture
d)
Homogeneous solution
16.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a solvent in it. 
17.
When a solvent contains as much of the solute as it can hold, the solution is said to be
a)
supersaturated
b)
diluted
c)
saturated
d)
unsaturated
18.

How much KNO3 solute is saturated at 40 degrees?

a)

75

b)

55

c)

65

d)

85

19.

At what temperature can you fully dissolve 140g of NaNO3?

a)

62

b)

73

c)

81

d)

You cannot determine this

20.

What type of a solution is 60g NaNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

21.

What type of a solution is 100g KNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

22.

What type of a solution is 260g sugar at 50ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

23.

Name the acid: H3PO3

PO3 - phosphite

a)
hydrophosphoric acid
b)
phosphorous acid
c)
phosphoric acid
d)
phosphoric hydroxide
24.

Name the acid: H3P

a)
hydrophosphoric acid
b)
phosphorous acid
c)
phosphoric acid
d)
phosphoric hydroxide
25.

Name the acid: H3PO4

PO4 - phosphate

a)
hydrophosphoric acid
b)
phosphorous acid
c)
phosphoric acid
d)
phosphoric hydroxide
26.
What is the substance which can able to produce hydroxide ion when it dissolve in water?
a)
Organic
b)
Salt
c)
Acid
d)
Base
27.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
28.

Identify the acid in the following equation: Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2

a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
29.

Identify the base in the following equation: Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2

a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
30.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
31.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2

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