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.
REPLACING THE-OH GROUP IN ALCOHOLS BY A HALOGEN. This page looks at reactions in which the-OH group in an alcohol is replaced by a halogen such as chlorine or bromine. It includes a simple test for an-OH group using phosphorus(V) chloride. Reactions involving hydrogen halides.eplacing-OH by iodine In this case the alcohol is reacted with a mixture of sodium or potassium iodide and concentrated phosphoric(V) acid, H3PO4, and the iodoalkane is distilled off. The mixture of the iodide and phosphoric(V) acid produces hydrogen iodide which reacts with the alcohol.