1. Chemistry – Mar 1, 2018 Agenda Homework review Gas forming reactions
Get out Driving Forces 1
For a HMK Check
P3 Challenge –nomenclature quiz M or N
Objective –
Driving forces continued
Assignment:
Driving Forces Worksheet 2
Agenda
Homework review
Gas forming reactions
Electron Transfer
After HMK Check, find your assigned problem
to share. Writers put their answers up, checkers
fix it. OR If neither has it, work together to solve.
Nate and Hiep are free agents to help or fill in
if someone is absent.

2. 3) Formation of a gas If a gas is produced, it will the driving force.
Acid base reactions, decomposition reactions, and combustions often form gases.
Common gases are CO2, NO2, SO2, NH3, H2S, H2, N2, O2, F2, Cl2 (memorize these)
If a product is a gas, then gas formation is a driving force.
Ex: K2CO3 (s)  K2O (s) + CO2(g)

3. 4) Transfer of electrons: Oxidation-Reduction
How to identify a redox reaction
Is there an atom that is an element on one side and in a compound on the other side? (often Single Replacement reactions)
Is there an element that has a different charge ion on both sides? (Many synthesis and decomposition reactions.)
Transfer of electrons is a driving force. Elements are driven to complete octets.
Note: All combustion reactions are driven by electron transfer.

4. Activity Series
For single replacement reactions, the determining factor is the place of the two metals in the activity series.
In general, a metal can displace any of the metals which are lower in the activity series:
Ex: Cu + AgNO3  Cu(NO3) Ag
Ex: Cu + Fe(NO3)3  Cu (NO3)2 + Fe
Ex: Zn + Fe(NO3)3  Zn (NO3)2 + Fe

5. Reactivity Series for Halogens
In general, a halogen can displace any of the halogens which are lower in the activity series for halogens.
Notice that the activity series of halogens is just their order within the periodic table.
Ex: F NaBr  2 NaF + Br2
Ex: Br NaCl  2 NaBr + Cl2

6. Practice ID driving forces
Balance, ID type, ID driving force
_____1. _____H3PO3  _____H3PO4 + _____PH3
_____2. _____Fe2O3 + _____C  _____CO + _____Fe
_____3. _____FeS + _____O2  _____Fe2O3 + _____SO2
_____4. _____NH3 + _____O2  _____NO + _____H2O
_____5 ._____Si + _____S8  _____Si2S4

7. More Practice ID driving forces
_____6. _____Hg2CO3  _____Hg + _____HgO + _____CO2
_____7. _____SiC + _____Cl2  _____SiCl4 + _____C
_____8. _____Al4C3 + _____H2O  _____CH4 + _____Al(OH)3
_____9. _____V2O5 + _____HCl  _____VOCl3 + _____H2O
_____10. _____Ag2S + _____KCN  _____KAg(CN)2 + _____K2S

8. Exit Slip - Homework
Exit Slip: Write the complete ionic equation then determine the net ionic equation for:
NiCl2 (aq) KOH (aq)  Ni(OH)2 (s) KCl (aq)
What’s Due? (Pending assignments to complete.)
Finish Driving forces Worksheet 1
Driving Forces Worksheet 2
What’s Next? (How to prepare for the next day)
Read p473, p , p , p