What is the oxidation number of P in PO33-?
Question 1 options:
- + 3
- -3
- +5
- -5
Question 2
What is the most accurate answer when we balance the following reaction using Half-Reaction for Basic solution?
MnO4- + Sn(OH)42- ® Sn(OH)62- + MnO2
Question 2 options:
a.
4H2O + 3MnO4- + 2Sn(OH)42- ® 2Sn(OH)62- + 3MnO2 + 2OH-
b.
2H2O + 4MnO4- + 3Sn(OH)42- ® 3Sn(OH)62- + 4MnO2 + 4OH-
c.
2H2O + 3MnO4- + 4Sn(OH)42- ® 4Sn(OH)62- + 3MnO2 + 4OH-
4H2O + 2MnO4- + 3Sn(OH)42- ® 3Sn(OH)62- + 2MnO2 + 2OH-
Question 3
How does the oxidation number of Bi change when BiO3– reacts to form Bi(OH)3?
Question 3 options:
a.
decreases by 3
b.
decreases by 2
c.
increases by 4
d.
no change
Question 4
What is the oxidation number of vanadium in this compound?
VO2ClO4
Question 4 options:
- -1
- +5
- +6
- +1
Question 5
For the following reaction if you write the complete reaction, which element is the Oxidation agent?
Solid magnesium and aqueous copper (II) sulfate
Question 5 options:
- Cu+2
- Mg0
- Mg+2
- Cu0
Question 6
Use the Redox Equation. Which reactant is the oxidizing agent?
KMnO4 + HCl ® KCl + MnCl2 + Cl2 + H2O
Question 6 options:
a.
K+
b.
KMnO4
c.
HCl
d.
Cl-
Question 7
If you balance the Redox Equation, what is the coefficient of H2O?
KMnO4 + HCl ® KCl + MnCl2 + Cl2 + H2O
Question 7 options:
- 2
- 3
- 8
- 6
Question 8
Which element contains a full 3s orbital?
Question 8 options:
- B
- Mg
- Ne
- Na
Question 9
How many p orbitals are in each energy level, except n = 1?
Question 9 options:
- 1
- 3
- 5
- 6
Question 10
Which element has the ground state electron configuration [Ne] 3s23px13py1 for its valence electrons?
Question 10 options:
a, Mg
- Al
- Si
- P
Question 11
Which organic compound is unsaturated?
Question 11 options:
a.
ethylcyclopentane
b.
2-methyl-3-ethylpentyne
c.
1,1-dimethylhexane
d.
cyclohexane
Question 12
To which family of organic compounds does CH3C(NH2 ) 2CH2CH2CH3 belong?
Question 12 options:
a.
alcohol
b.
c.
amide
d.
Question 13
Which compound is formed by the oxidation of a secondary alcohol?
Question 13 options:
a.
tertiary alcohol
b.
aldehyde
c.
carboxylic acid
ketone
Question 14
x “phenyl” refers to a(n)
Question 14 options:
a.
Alcohol
b.
Benzene ring
c.
Ether
d.
Ester
Question 15
Find the correct name when we add water to Propene
Question 15 options:
- propan-2-ol
- propanol
- propane-1,2-
diol
- propen-2-ol
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