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WorksheetsChemistry
Total questions: 18
Worksheet time: 41mins
Name
Class
Date
1.
The following is true for physical properties of acids EXCEPT
a)
Acid has pH < 7
b)
Acid taste bitter
c)
Acid turn methyl orange to red
d)
Acid turns phenolphthalein to colorless
2.
The following is true for physical properties of bases EXCEPT
a)
Bases has pH > 7
b)
Bases taste bitter
c)
Bases turn methyl orange to red
d)
Bases turns phenolphthalein to colorless
3.
The following is true for chemical properties of acids EXCEPT
a)
Acid react with reactive metal to produce H2 gas
b)
Acid neutralize metal hydroxide to produce salt and water
c)
Acid neutralize metal oxide to produce salt and water
d)
Acid neutralize metal carbonate to produce H2 and water
4.
Which metal will not react with HCI to produce H2 gas?
a)
Tin
b)
Iron
c)
Copper
d)
Aluminium
5.
Which of the following is NOT a base?
a)
Metal halides
b)
Metal hydroxide
c)
Metal Oxide
d)
Metal Carbonates
6.
Which of the following neutralization reaction is wrong?
a)
LiOH + HCI → LiCI + H2O
b)
Fe(OH)2 + 2HNO3 → Fe(NO3)2 + 2H2O
c)
CaO + 2HCI → CaCI2 + H2O
d)
CaCO3 + 2HCI → CaCI2 + H2O
7.
The following is true for strong and weak acid EXCEPT
a)
Strong acid dissociate completely
b)
Weak acid dissociate partially
c)
Strong acid has high conductivity
d)
Weak acid has low pH value
8.
Which of the following is NOT a strong acid ?
a)
HCI
b)
H2SO4
c)
HNO3
d)
H3PO4
9.
Which of the following is NOT a weak acid?
a)
CH3COOH
b)
H2SO4
c)
H2CO3
d)
H3PO4
10.
Which of the following is NOT a weak base?
a)
NH3
b)
C2H5NH2
c)
LiOH
d)
NH4OH
11.
The following is true on pH EXCEPT
a)
pH is power of hydrogen
b)
pH is -log10 of hydrogen ion concentration
c)
High H+ concentration lead to a low pH
d)
1 unit change in pH is 100 fold change in concentration
12.
The following is true about Kw for water EXCEPT
a)
Kw called dissociation contant for water
b)
Kw is constant at a constant temperature
c)
Kw is ionic product of water
d)
At pH 7, Kw = 1 x 10-14
13.
Solution of acid A has pH 1 and acid B with pH 2. Which statement is CORRECT ?
a)
Acid A stronger than acid B
b)
[A] > [B]
c)
Concentration of H+ in A is higher than B
d)
Concentration of H+ in B is twice as high than A
14.
Solution changes from pH 2 to 5. What happen to concentration of H+ during this pH change?
a)
Decrease by factor of 1000
b)
Increase by factor of 1000
c)
Decrease by factor of 100
d)
Increase by factor of 100
15.
List two ways to distinguish between strong and weak acid/base.
a)
pH measurement and conductivity
b)
pH measurement and reactivity
c)
acidity and conductivity
d)
pH measurement and acidity
16.
Concentration of H+ ion is 1 x 10-12. Find its pH.
a)
pH = 2
b)
pH = 12
c)
pH = -12
d)
pH = 10
17.
Calculate pH for 0.2M of H2SO4 solution.
a)
pH = -lg[0.2]
b)
pH = -lg[0.4]
c)
pH = -lg[0.1]
d)
pH = lg[0.4]
18.
Using Kw = [H+][OH-], calculate concentration of OH- for 0.001M H2SO4.
a)
Kw = [0.001][OH-], [OH]=Kw/[0.001]
b)
Kw = [0.002][OH-], [OH]=Kw/[0.002]
c)
Kw = [H+][0.001], [H+]=Kw/[0.001]
d)
Kw = [H+][0.002], [H+]=Kw/[0.002]
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