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Worksheets12 CHM 3-2 L2 start quiz
Total questions: 10
Worksheet time: 7mins
For the reaction...
SO2 + O2 <−> SO3
If the equilibrium shifts to the right, the concentration of O2 will ___________.
increase
decrease
double
stay the same
2SO2(g)+O2(g)⇌2SO3(g)
Adding SO2(g) will
shift equilibrium forward
shift equilibrium reverse
no shift
What is the conjugate base in the following reaction?
HCO3-
HCl
H2CO3
Cl-
1.0 ×10−10 M
1.0 ×10−4 M
1.0 ×10−14 M
1.0 ×10−7 M
Which of these pKa values corresponds to the strongest acid?
1.2
1.4
1.6
1.8
Which of the following show an acid and its conjugate base pair (in that order)
H2SO4, SO42-
OH-, H2O
NH4+, H2O
H2CO3, HCO3-
Reduction is the ___________ of electrons.
loss
gain
transfer
share
Which statement is true:
Mg → Mg2+ + 2e–
Mg gains 2 electrons
Mg2+ loses 2 electron
Mg loses 1 electron
Mg loses 2 electrons
Which of the following is the balanced half -reaction for the oxidation of Cu to Cu+2?
Cu --> Cu+2
Cu + 2 e- --> Cu+2
Cu - 2e- --> Cu+2
Cu --> Cu+2 + 2 e-
Substance that oxidizes another substance by accepting its electrons.
oxidising agent
reducing agent
combustion
