Table of Contents
What is the tailing of mercury and how it is removed?
Mercury loses it’s lustreness, meniscus and consequently sticks to the walls of glass vessel when it reacts with ozone. This phenomenon is called tailing of mercury. It is removed by shaking it with water which dissolves Hg2O.
What is meniscus of mercury?
Water meniscus is convex, mercury menisucs is concave A concave meniscus, which is what you normally will see, occurs when the molecules of the liquid are attracted to those of the container. This occurs with water and a glass tube.
What is being trapped in an ozone layer?
Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms’ protective layers, like skin, damaging DNA molecules in plants and animals. The ozone layer, our Earth’s sunscreen, absorbs about 98 percent of this devastating UV light.
Which country has thinnest ozone layer?
Abnormal weather patterns in the upper atmosphere over Antarctica dramatically limited ozone depletion in September and October, resulting in the smallest ozone hole observed since 1982, NASA and NOAA scientists reported today.
What is the Valency of mercury in Hg2O?
hg has a valency of +1 and +2 in +1 valency it’s called mercurous and in +2 valency its called mercuric!
Is Hg2O stable?
Mercury(I) oxide, also known as mercurous oxide, is an inorganic metal oxide with the chemical formula Hg2O. It is chemically unstable and converts to mercury(II) oxide and mercury metal.
What is tailing of mercury give equation?
Tailing of mercury is due to formation of Hg2Cl2.
How is oxygen converted to ozone?
When high-energy ultraviolet rays strike ordinary oxygen molecules (O2), they split the molecule into two single oxygen atoms, known as atomic oxygen. A freed oxygen atom then combines with another oxygen molecule to form a molecule of ozone.
Why is mercury cohesive?
Formed bonds are called hydrogen bonds which lead to strong cohesive forces between the water molecules and high surface tension of water. As mercury is a metal, the bonds between the molecules are metal bonds that are much stronger than the hydrogen bonds leading to very high cohesive forces and high surface tension.