→ fast surface redox reactions
→ higher capacitance than EDLC
electron transfer caused by electrochemical oxidation and reduction of active reagents
between two electrodes with different potentials
charge transfer properties
investigating transitionmetal oxides
→ the c
metallic calcium but from
a calcium oxalate precipitate.
b. The precipitate is not anhydrous calcium oxalate but rather a
monohydrate of calcium oxalate (CaC
c. The oxalate is created from chemical reactions of a solution of
plus 2.5 mL of 12 M HCl with base created from the
hydrolysis of urea.
d. All of what we learned before about handling samples, constant
metallic salts, aluminum and iron salts being the most common.
The coagulation process using filter alum, Al2(SO4)3 14.3 H2O, the standard coagulant in water treatment, is thought to proceed in the following three stages:
1. The alum ionizes in the water, producing Al+3 and SO4-2 ions. Some of the Al+3 ions neutralize the negative charge on the colloids, but
2. Most of the Al3+ ions combine with
adsorption of invertase on activated charcoal.
1956 Invention of the first oxygen electrode [Leland Clark]
1962 First description of a biosensor: an amperometric enzyme electrode for glucose. [Leland Clark]
1969 First potentiometric biosensor: urease immobilized on an ammonia electrode to detect urea. [Guilbault and Montalvo]
1970 Invention of the Ion-Selective Field-Effect Transistor (IS
proteins, but there are (as of July 2011) no known structures of any OR. There is a highly conserved sequence in roughly three quarters of all ORs that is a tripodal metalion binding site, and Suslick has proposed that the ORs are in fact metalloproteins (mostly likely with zinc, copper and possibly manganese ions) that serve as a Lewis Acid site for binding of many odorant molecules.