Question

How is Sulphur estimated by the carius method?

Answer 1

Hint : To answer this question, we first need to understand what chemical elements are. An element is a pure substance made up entirely of atoms with the same number of protons in their atomic nuclei, as defined by chemistry. Chemical elements, unlike chemical compounds, cannot be broken down chemically into simpler molecules.

Complete Step By Step Answer:
Sulphur - Sulfur (Sulphur in British English) is a chemical element with atomic number 16 and the symbol S. It's nonmetallic, plentiful, and multivalent. Sulfur atoms form cyclic octatonic compounds under normal conditions. At ambient temperature, element Sulphur is a bright yellow crystalline solid.
Sulfur is the tenth most abundant element in the universe in terms of mass, and the fifth most abundant on Earth. Sulfur on Earth is mostly found in sulphide and sulphate minerals, while it is occasionally found in its pure, original form.
Carius method - The Carius halogen method is a quantitative method for determining halogens in chemical compounds in analytical chemistry. In a furnace, a known mass of an organic compound is heated in the presence of silver nitrate housed in a hard glass tube called a carius tube.
Estimation of Sulphur by carius method - In the Carius method, a known mass of Sulphur-containing organic compound is heated in a sealed Carius tube in the presence of excess fuming nitric acid. This organic compound contains Sulphur, which is converted to sulphuric acid. An excess of barium chloride solution is used to treat this sulphuric acid. The mineral barium sulphate is produced and precipitated. After that, the material is filtered, washed, dried, and weighed. The Sulphur is determined by this proportion. As a result, this procedure is known as the Carius method of Sulphur estimation.

Note :
Analytical chemistry is the study and use of tools and procedures for separating, identifying, and quantifying materials. Separation, identification, and quantification may be used alone or in combination with other methods in practice. Separation is the process of isolating analytes. Quantitative analysis determines the numerical amount or concentration, whereas qualitative analysis identifies analytes.