Tema
Q:
Based on your worksheet results, please match the following:
The electron group geometry of NH 3 is
The electron group geometry of BF 3 is
[Choose ]
The electron group geometry of \( \mathrm{PF5} \) is
[Choose ]
[Choose ] electron group geometry of SF4 is geometry of PF 3 is
[Choose ]
Q:
Please select the molecule(s) with resonance structures from the following.
CCl 4
CHCl 3
SO 3
H 2 O
None
Q:
Please select the molecule(s) with double bond(s) from the following.
\( \mathrm{CCl}^{2} \)
CHCl 3
CO 3
H 2 O
None
Q:
Please select polar molecule(s) from the following.
\( \square \mathrm{CCl} 4 \)
\( \square \mathrm{CHCl} 3 \)
\( \square \mathrm{CO} 3 \)
CO 2
Q:
Which of the following molecule(s) have lone pair electrons and/or non-identical central bonds?
\( \mathrm{CCl}_{4} \)
\( \mathrm{CHCl}_{3} \)
\( \mathrm{SO}_{3} \)
\( \mathrm{CO}_{2} \mathrm{O} \)
Q:
Based on your worksheet results, please match the following:
The electron group geometry of CCl 4 is
The electron group geometry of CHCl 3 is
[Choose ]
[Choose ]
The electron group geometry of \( \mathrm{SO}_{3} \) is
[Choose ]
[Choose ] electron group geometry of H 2 O is
[Choose ]
Q:
\[ \mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+2 \mathrm{Al}(\mathrm{s}) \rightleftharpoons \mathrm{Al}_{2} \mathrm{O}_{3}(\mathrm{~s})+2 \mathrm{Fe}(\mathrm{s}) \]
View Available Hint(s)
The equilibrium will shift toward the reactants.
The equilibrium will shift toward the products.
The reaction will not shift toward either the products or reactants.
The reaction will shift toward both the reactants and products.
Q:
If an endothermic reaction is at equilibrium, how will the equilibrium shift when heat is added to the reaction?
View Available Hint(s)
The reaction will shift toward the reactants.
The reaction will shift toward the products.
The reaction will not shift toward products or reactants.
The reaction will shift toward both reactants and products.
Q:
Which of the following represent a buffer system?
Check all that apply.
\( \square \mathrm{NaOH} \) and NaCl
\( \square \mathrm{H}_{2} \mathrm{CO}_{3} \) and \( \mathrm{NaHCO}_{3} \)
HF and KF
KCl and NaCl
Q:
The pH scale for acidity is defined by
\[ \mathrm{pH}=-\log \left[\mathrm{H}^{+}\right] \]
where \( \left[\mathrm{H}^{+}\right] \)is the concentration of hydrogen ions measured in moles per liter (M).
a) A sample of rhubarb is found to have a hydrogen concentration of 0.000501 M . What is the pH? Round
your answer to 2 decimal places.
\( \mathrm{pH}=\square \)
b) The pH of a sample of red onion is 5.40 . What is the hydrogen concentration? Keep at leost 2 non-zero
decimal ploces.
\( \left[\mathrm{H}^{*}\right]=\square \)
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