Molecular Structure
What is the shape of the molecular structure for OCl2
Bent - 2 bonding e- pairs & 2 non-bonding e- pairs
Draw the bond for magnesium sulfide. What kind of bond is it?
Ionic Bond: [Mg]2+[S]2-
How many oxygens & how many hydrogens are in the following reactants?
2CH3COOH + 3H2O -->
7 oxygens, 14 hydrogens.
Would a single-replacement reaction between iron and sodium chloride occur?
No - Iron is lower on the activity series than sodium
Draw the Lewis dot molecular structure for CO2. What shape is it?
Dace will check drawings. Linear shape
What is the primary IMF present in hydrochloric acid (HCl)?
Dipole - Dipole
Balance the following equation:
AgI + Na2S --> Ag2S + NaI
2AgI + Na2S --> Ag2S + 2NaI
What type of reaction is this?
CH4 + 2O2 --> CO2 + 2H2O
Combustion
Draw the Lewis dot structure for PCl5. What shape is it?
Dace will check drawings. Trigonal Bipyramidal shape.
What is the primary IMF present in ammonia (NH3)?
Hydrogen bonds
Write the skeleton equation for the reaction between silver nitrate and potassium phosphate
AgNO3 + K3PO4 --> Ag3PO4 + KNO3
What is the precipitate formed when barium nitrate reacts with sodium sulfate?
barium sulfate (BaSO4)
Is chloroform (CHCl3) a polar molecule?
Yes. It has a tetrahedral structure, but only 3 of its bonds are polar, and those bonds are not evenly distributed.
Draw the lewis structure for N2. What kind of bond is it?
Each nitrogen has 5 valence electrons. A triple bond is needed to satisfy the octet rule for each atom using only 10 electrons
Balance the following equation:
PCl5 + H2O --> H3PO4 + HCl
PCl5 + 4H2O --> H3PO4 + 5HCl
Write the balanced chemical equation for the reaction between magnesium and copper(I)nitrate. Will the reaction occur?
Mg(m) + 2Cu(NO3)(aq) --> Mg(NO3)2(aq) + 2Cu(m)
The reaction will occur, because magnesium is higher on the activity series than copper.
Draw the molecular structure of XeO2F2 (challenge). Hint: Only Xe can break the octet rule
Dace will draw the answer (it's seesaw shaped)
Explain what kind of IMF is present in methane (CH4) AND how that IMF works (what holds the molecules together)?
London-dispersion (Van der waals) forces is the IMF present in methane. These forces come from the random distribution of electrons throughout the molecule. At a given moment, there can be a temporary dipole in a molecule, which can temporarily induce a dipole in another molecule, creating attraction.
Balance the following equation:
C2H6 + O2 --> CO2 + H2O
2C2H6 + 7O2 --> 4CO2 + 6H2O
Write the balanced chemical equation for the reaction of zinc nitrate and potassium carbonate. Will the reaction occur?
K2CO3(aq) + Zn(NO3)2(aq) --> ZnCO3(s) + 2KNO3(aq)
The reaction will occur, since a precipitate (zinc carbonate) forms