Answer For CP Review Homework For Molecular Geometry Polarity IMF And Physical Properties Test

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15) No, since the substance with highest IMF would require the most energy to "push against" (solid particles) vs liquid particles) and/or overcome (for liquid particles vs. gas particles).

15) No, since the substance (Substance A) with highest IMF would require the most energy to "push against" (solid particles) vs liquid particles) and/or overcome (for liquid particles vs. gas particles).

The following are the answers to the questions/problems from CP Review Homework for Molecular Geometry Polarity IMF and Physical Properties Test.

1a) Ionic 1b) Polar 1c) Non-polar 1d) Polar 1e) Ionic 1f) Polar

2)

N₁H₃: 8ve^-, 3 single bonds, N is central atom with 1 lone pair (LP), Pyramidal (107.0^o), sp³
Si₁H₄: , 8ve^-, 4 single bonds, Si is central atom with 0 lone pair (LP), Tetrahderal (109.5^o), sp³
F₂: 14ve^-, 1 single bond, no central atom, Linear (180^o), NA
S₁Cl₂: 20ve^-, 2 single bond, S is central atom with 2 LP , (Bent 104.5 ^o), sp³

CCl₄, ΔEN =0.5, 4 non-polar bonds, Tetrahedral (sym), NA, non-polar molecule, LDF
BeCl₂, Δ EN =1.5, 2 polar bonds, Linear (sym), Yes, non-polar molecule, LDF
C₁O₁, Δ EN=1.0, 1 polar bonds, Linear (sym), polar molecule (since only have one bond), dipole-dipole interaction
NF₃, Δ EN=1.0, 3 polar bonds, Pyramidal (not sym), polar molecule, dipole-dipole

4) Information on both reactants

5) Vapor (if it is a gas at room temperature sis called a gas)

6) Liquid particles need to obtain enough energy to overcome its IMF and go into the gas phase.

7) Evaporation occurs a) on the surface of the liquid (boiling occurs in the bulk of the liquid) and b) at any temperature up to but not including the boiling point (boiling occurs only at boiling point).

8) +--> symbol (except solid line not dashed), arrow over more electronegative element

9) Ionic cpd: ΔEN ≥ 1.7
Polar bond: 1.7>ΔEN≥ 0.8
Non-polar bond: ΔEN < 0.8

10) Both give away their valence electrons. Then you have metal cations and a "sea of free flowing valence electrons (also called delocalized valence electrons).

11) Assume polar, prove non-polar

12. ionic/metallic, polar molecules with H-N , H-O, H-F bonds, all other polar molecules, and non-polar molecules

12 (2nd one). H₂O has highest IMF since it is Hydrogen bonding, then C₁O₁ with dipole-dipole interaction and finally CH₄ with London Dispersion Forces (LDF)

13. VSEPR - ValenceShellElectronPairRepulsion, The electron domains are number of Lone Pairs on central atom and bonding pairs (Mr. McLeod uses outside atoms for this one).

14) Water is polar molecule that exert coulombic force (CF) via Hydrogen bonding whereas oil is a non-polar molecule that does not exert CF (London Dispersion Forces). So using Like dissolve Like, Like being species exerting CF or not, they are "Like" so they do not mix. For two liquids, it is called immiscible.

15) No, since the substance (Substance A) with highest IMF would require the most energy to "push against" (solid particles) vs liquid particles) and/or overcome (for liquid particles vs. gas particles).

16a) IC, Fe₂O₃
16b) A, Hydrochloric acid
16c) MC N₂F₆