Lecture 15 (Group 1 Elements, Lithium Batteries, etc.) Flashcards
What kind of agent is high standard reduction potentials?
they are strong reducing agents
What is a lewis acid?
electron pair acceptor
What is a lewis base?
electron pair donor
Reactive and strong reducing agents react with what type of metals?
non-metals
What is the rechargeable Na/S battery suitable for?
network energy storage
How do you prevent product mixing?
separation of the cathode from the anode
By what use do you accomplish the prevention of product mixing? (3 things)
1) a mercury cathode; graphite anode
2) an asbestos diaphragm
3) an ion permeable membrane; graphite or platinum-covered titanium anode, steel or nickel cathode
How can oxides be obtained? M2O
By using limited O2 supply or by decomposition of M2O2 and MO2
Na2CO3 and NaHCO3 can be interconverted. True or false?
True
What are crown ethers?
cyclic polyethers that coordinate alkali metals strongly
Which parts of crown ethers are hydrophilic and hydrophobic?
The ring interior is hydrophilic and the exterior is hydrophobic
How do crown ethers coordinate alkali metals?
via electron donation from the oxygen lone pairs, and form stable complexes with alkali metals
[Li(12-crown-4)]N3^3
What does 12 mean?
What does 4 mean?
12 means the number of oxygen and carbon atoms. 4 means the number of oxygen atoms.
What are catalysts?
“naked” nucleophiles that are stronger than their classical analogs
What are cryptands?
Polycyclic ligands containing a cavity large enough to host a positive metal ion. It is a very stable metal complex.
