Download 9-2 Single Replacement Reactions (SR) What happens if you put a

9-2 Single Replacement Reactions (SR)
What happens if you put a piece of Aluminum foil into
an aqueous solution of copper II chloride?
Al (s) + CuCl2 (aq) → Cu (s) + AlCl3 (aq)
Balance the above equation
DEF: Single Replacement Reactions (SR) = A single, “morr”
reactive substance replaces another in a compound.
• Metals (potentially) replace metals. Use the Activity Series
of the Metals. The higher up, the morr reactive.
• Halogens (potentially) replace halogens. Use the periodic
table or, the Activity Series of the Halogens. The higher up,
the morr reactive.
Decreasing Activity
Activity Series of the Metals – See p 293
Element
Lithium
Rubidium
Potassium
Calcium
Sodium
Magnesium
Aluminum
Manganese
Zinc
Iron
Nickel
Tin
Lead
*Hydrogen
Copper
Mercury
Silver
Platinum
Gold
Symbol
Li
Rb
K
Ca
Na
Mg
Al
Mn
Zn
Fe
Ni
Sn
Pb
H (H2)
Cu
Hg
Ag
Pt
Au
Metals from Magnesium to Lead will replace H from ACIDS ONLY!! You
will be given a copy of this chart for your test. There is also an activity series
for the halogens (7A’s). They are already in order from most to least active on
the periodic table, so there is no need to look at another chart.
When working problems, you need to decide if your “alone” substance is a
metal or a halogen. As stated above, metals potentially replace metals, and
halogens potentially replace halogens.
In our demo equation,
2 Al (s) + 3 CuCl2 (aq) → 3 Cu (s) + 2 AlCl3 (aq)
Al was above Cu on the table, so the reaction did happen. If you are asked for
the type of equation, even if the reaction doesn’t happen due to reactivity issues,
you still classify it as a Single Replacement reaction (SR).
Try These!
Ex 1:
Mg +
Zn(NO3)2 →
Ex 2:
Li +
Zn(NO3)2 →
Ex 3:
Ca +
LiOH
→
Ex 4:
Zn +
H2SO4
→
Ex 5:
Zn +
H2O
→
Ex 6:
Cl2 +
KBr
→
Ex 7:
I2 +
NaCl
→
Ex 8:
Mg + H3PO4
→
Ex 9:
Rb +
→
H2O
Let’s see some videos on the reactivity of rubidium in water!
http://www.youtube.com/watch?v=m55kgyApYrY
http://www.youtube.com/watch?v=GVoJZkmAAfA
http://www.youtube.com/watch?v=sS3cIK9jlB8&feature=related
http://www.youtube.com/watch?v=qliI4LXdqpQ&feature=related