Magnesium carbonate, Mg CO3 (archaic name magnesia alba), is an inorganic salt that is a white solid.Several hydrated and basic forms of magnesium carbonate also exist as minerals.orms [edit]. The most common magnesium carbonate forms are the anhydrous salt called magnesite (MgCO 3) and the di, tri, and pentahydrates known as barringtonite (MgCO 3 Â·2 H 2 O), nesquehonite (MgCO 3 Â·3 H 2 O), and lansfordite (MgCO 3 Â·5 H 2 O), respectively.
Reaction type: Nucleophilic Substitution (SN1 or SN2). Summary: 1  When treated with HBr or HCl alcohols typically undergo a nucleophilic substitution reaction to generate an alkyl halide and water.eaction of Alcohols with other Halogenating agents (SOCl2, PX3). Reaction type: Nucleophilic Substitution (SN1 or SN2). Summary: 1  Alcohols can also be converted to alkyl chlorides using thionyl chloride, SOCl2, or phosphorous trichloride, PCl3.
Primary and secondary alcohols react within 2-3 seconds to form an opaque blue-green suspension. Aldehydes give the same result but usually take 10 seconds or more to react. ï· Aldehydes and ketones both react with 2,4-dinitrophenylhydrazine (DNPH) reagent to yield yellow or orange precipitates within a few minutes. ï· Alkenes react readily with dilute aqueous potassium permanganate to form a brown precipitate as the purple color of the permanganate disappears. ï· Alkyl halides give a green flame in the Beilstein test, which involves heating a copper wire moistened with the unknown in a burner flame.