CHM1011 - Chemistry I - S1 2025
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Mass calculation
Assuming you had 0.013 moles of copper chloride, what amount of 4 M NaOH would be the minimum volume you could use in Section 2.1 of Exercise 3?
State your answer in millilitres but remember SI units are litres. Report to one decimal place. Do not include units with your answer.
Which of the following shapes does not represent a 4 electron domain?
Molecule: RnF4
Total number of valence electrons: e-
Parent geometry:
Molecular geometry:
Molecule: BeF2
Total number of valence electrons: e-
Parent geometry:
Molecular geometry:
Molecule: BCl3
Total number of valence electrons: e-
Parent geometry:
Molecular geometry:
Chemistry Drawing Questions
Consider the formic acid molecule, CHOOH.
What is the parent geometry and molecular geometry about the carbon atom and about the hydroxyl oxygen atom?
Carbon:
- Parent geometry -
- Molecular geometry -
Hydroxyl oxygen:
- Parent geometry -
- Molecular geometry -
Formic acid can be deprotonated in alkali environments to form the formate ion, CHOO-.
What is the bond order for the O…C…O bond in the formate ion? {Hint: Single bonds have a bond order of 1, double bonds have a bond order of 2, etc. You'll learn more about this in Week 5!}
- Bond order:
Note: When using Lewis structures to describe the distribution of electrons in molecules, we define bond order as the number of bonding pairs of electrons between two atoms. Thus a single bond has a bond order of 1, a double bond has a bond order of 2, and a triple bond has a bond order of 3.Please refer to our recommended online textbook for more information.
What is the molecular geometry of hydrogen sulfide?
Molecule: PO2-
Total number of valence electrons: e-
Parent geometry:
Molecular geometry:
Molecule: SeF5-
Total number of valence electrons: e-
Parent geometry:
Molecular geometry:
Molecule: ICl3
Total number of valence electrons: e-
Parent geometry:
Molecular geometry:
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