Questions from General Chemistry

Q: Why are all diatomic molecules linear, regardless of the number of

Why are all diatomic molecules linear, regardless of the number of valence electron pairs on the atoms involved?

Q: What do we assume about the volume of the actual molecules themselves

What do we assume about the volume of the actual molecules themselves in a sample of gas, compared to the bulk volume of the gas overall? Why?

Q: Although both the BF3 and NF3 molecules contain the same number of

Although both the BF3 and NF3 molecules contain the same number of atoms, the BF3 molecule is flat, whereas the NF3 molecule is trigonal pyramidal. Explain.

Q: Temperature is a measure of the average of the molecules in a

Temperature is a measure of the average of the molecules in a sample of gas.

Q: For the indicated atom in each of the following molecules or ions

For the indicated atom in each of the following molecules or ions, give the number and arrangement of the electron pairs around that atom. a. S in SO32- b. S in HSO3- c. S in HS-

Q: Using the VSEPR theory, predict the molecular structure of each of

Using the VSEPR theory, predict the molecular structure of each of the following molecules. a. NCl3 b. H2Se c. SiCl4

Q: Using the VSEPR theory, predict the molecular structure of each of

Using the VSEPR theory, predict the molecular structure of each of the following molecules. a. CBr4 b. PH3 c. OCl2

Q: Using the VSEPR theory, predict the molecular structure of each of

Using the VSEPR theory, predict the molecular structure of each of the following polyatomic ions. a. sulfate ion, SO42- b. phosphate ion, PO43- c. ammonium ion, NH4+

Q: Explain how the atoms in covalent molecules achieve electron configurations similar to

Explain how the atoms in covalent molecules achieve electron configurations similar to those of the noble gases. How does this differ from the situation in ionic compounds?

Q: What conditions are considered “standard temperature and pressure” (STP

What conditions are considered “standard temperature and pressure” (STP) for gases? Suggest a reason why these particular conditions might have been chosen for STP.