Question
Which method of purification is represented by the following equation ?
Which method of purification is represented by the following equation ?
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Solution
The correct option is D VanArkel
Van Arkel is a method in which heat treatment is used to purify the metal. In this process metals are converted into other metal compound for loosly coupled like as iodine to make metal iodide which are easily decomposed and give pure metal. The process is known as Van Arkel method.
Zone refining is a method which is based on the principle that the impurities are more soluble in the melt than in the solid state of the metal.
Cupellation is a process used to separate noble metals such as gold or silver from base metals such as lead.
Polling in metallurgy is the process of refining a crude metal which has its own oxide as impurity.
Van Arkel is a method in which heat treatment is used to purify the metal. In this process metals are converted into other metal compound for loosly coupled like as iodine to make metal iodide which are easily decomposed and give pure metal. The process is known as Van Arkel method.
Zone refining is a method which is based on the principle that the impurities are more soluble in the melt than in the solid state of the metal.
Cupellation is a process used to separate noble metals such as gold or silver from base metals such as lead.
Polling in metallurgy is the process of refining a crude metal which has its own oxide as impurity.
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