In case of amphoteric macroporous hydrogels action of concentrated salt solution does not lead to dissolution of polyampholyte material due to covalent cross-linking of macromolecules.
32.
Since copper ( II ) hydroxide is mildly amphoteric, it dissolves slightly in concentrated alkali, forming [ Cu ( OH ) 4 ] 2 ".
33.
It is the only one of the Group 13 elements to react with air at room temperature, slowly forming the amphoteric oxide Tl 2 O 3.
34.
The bile salt component is an active non-enzymatic substance that facilitates fat absorption by helping it to form an emulsion with water due to its amphoteric nature.
35.
Ion exchangers are either "'cation exchangers "'that exchange positively amphoteric exchangers "'that are able to exchange both cations and anions simultaneously.
36.
Invented around 1900, Sterno is made from ethanol, methanol, water and an amphoteric oxide gelling agent, plus a dye that gives it a characteristic pink color.
37.
The oxides of tin in its preferred oxidation state of + 2, namely SnO and Sn ( OH ) 2, are amphoteric; it forms stannites in strongly basic solutions.
38.
For all actinides, oxides AnO 3 are amphoteric and An 2 O 3, AnO 2 and An 2 O 5 are basic, they easily react with water, forming bases:
39.
The oxides of zinc in its preferred oxidation state of + 2, namely ZnO and Zn ( OH ) 2, are amphoteric; it forms anionic zincates in strongly basic solutions.
40.
The oxides of cadmium in its preferred oxidation state of + 2, namely CdO and Cd ( OH ) 2, are weakly amphoteric; it forms cadmates in strongly basic solutions.
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