Flashcards in Chemistry day 8 Deck (43):
Loss of electrons
gain of electrons
elements in their elemental form
zero oxidations state
group one metals
group 2 metals
+1 except when bonded to metals then -1..
must be deteremined by anions charge... (Al=+3, Zn=+2, Cd=+2, Ag=+1)
most electrognegative elements get
their typical oxidation state
The last element not assigned balances....
balances the compound/ion
species that is reduced
speies that is oxidiezed
Elements or compounds are oxidized/reduced
entire chemical species act as the reducing/oxidizing agents
ALWAYs the size of oxidation.... an ox... electrochemical cell
Cathode... electrochemical cells
always teh site of recution RED CAT
Electrons always flow from anode to cathode
Anions flow to the...
anode and cations to the cathode through the salt bridge...
(spontaneous) cells, the cathode is + and the anode is -
non-spontaneous... the anode is + and the cathode is -
metal/metal salt solution cells
the cathode gains mass, while the anode loses mass
Battires E>0... Produce electricity ...... Anode(-) to Cathode(+) species oxidized...
Standard Hydrogen Electrode SHE
potnetial of 0.00 V
can not effect shift in equillibrium
shift to the right...
shift to the left
strongest oxidizing agent
even numbers of protons and or neutrons to be more stable
Magic numbers are more stable (2,8,20,50,82,126)
daughter + energy
moss is always lost
reduces mass #... large nuclei below the belt
Beta deca (beta emission)
n----> p N/Z is too hight... same net result 0/-1
B + decay (Positron emission)
0/4 p--->n.... N/Z too low
excited state to lower state
the splitting of larger nuclei into smaller nuclei
the combination of smaller nuclei into larger nuclei
Rate of Decay
Always first order (InN=lnNo-kt) natural log
amount of energy holding somethign together