Notes, Exercises, Videos, Tests and Things to Remember on Introduction to Mercury
Please scroll down to get to the study materials.
The basic information about mercury is given as:
−38.829°C, −37.892°F, 234.321 K
356.619°C, 673.914°F, 629.769 K
13.5336 gram per centimeter
State at 20 °C
The compounds of mercury are:
The term hydride mean compounds of the type MxHy and not necessarily to indicate that any compounds listed behave as hydrides chemically.
Cinnabar → HgS
Livingstonite → HgSb
The mercury thus obtained may contain Au, Ag, Pt impurities which are removed by vacuum distillation and finally pure Hg is obtained.
$$Zn+Hg\longrightarrow ZnHg (formation\space of\space zinc\space amalgam)$$
$$Na+Hg\longrightarrow NaHg (formation\space of\space sodium\space amalgam)$$
$$Hg+Cl_2\longrightarrow HgCl_2 (limited\space amount\space of \space mercury)$$
$$Hg+Cl_2\longrightarrow Hg_2Cl_2 (excess\space amount\space of \space mercury)$$
Mercury and it’s compound are highly poisonous or toxic, so this should be handled safely to prevent absorption by inhalation, ingestion and through the skin. It may cause deafness, madness, lung damage, brain damages, and even death. Mercury vapors are toxic because if inhaled it passes to the bloodstream, digestive system, lungs and then transported to the brain.
The industries which manufacture acetaldehyde and polyphenyl chloride in Minamata used mercury compound as the catalyst. They released their effluent in Minamata bay. That mercury compound is was taken by plankton, fishes eat plankton. The people of Minamata consumed such fast and suffered from diseases.
Mercury rarely found in the pure state in nature, but can be found as droplets in cinnabar (mercury sulfide) ores.Mainly mercury is found in China and Kyrgyzstan. The metal is obtained by heating cinnabar in a current of air and condensing the vapor.
pulse, Tracy. Introduction to chemistry. u.s.a: flex book, 2010.
Pathak, Sita Karki. The Text Book of Chemistry. Kathmandu: Vidhyarthi Pustak Bhandar, 2012.