Concept explainers
Interpretation:The reason behind capillary tube sealed before the melting point of
Concept introduction:The melting point is usually defined as the particular temperature range that allows liquid phase and solid phase to exist in equilibrium. When a substance melts the temperature remains constant until all the substance has melted down to its liquid form. Melting ranges usually lie at differences of
For determination of melting point a fine powder of dried product is made. The capillary tube is sealed from one end and is filled one third by this uniformly smooth powered product. Then this capillary is placed suitable within its position in melting point apparatus and electrical or thermal heat is used to melt the solid. The temperature when the first droplet arises to the complete melt form corresponds to the range of desired product’s melting point. For instance, heat mantle type apparatus for determination of melting pint is illustrated as follows:
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EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
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