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the reaction mixture was heated to reflux for 150 min., and after cooling down to 0° c quenched by careful dropwise addition of water (50 ml).
la mezcla de reacción se calentó a reflujo durante 150 min, y tras enfriarla a 0 oc, se detuvo mediante adición cuidadosa de agua gota a gota (50 ml).
for example, if sncl2 is added dropwise into a solution of mercury(ii) chloride, a white precipitate of mercury(i) chloride is first formed; as more sncl2 is added this turns black as metallic mercury is formed.
for example, if sncl2 is added dropwise into a solution of mercury(ii) chloride, a white precipitate of mercury(i) chloride is first formed; as more sncl2 is added this turns black as metallic mercury is formed.