19.
The melting point of pure silver and pure lead is 961°C and 327°C respectively. A molten mixture of the two metals on cooling at a constant temperature forms a eutectic mixture with a composition of approximately 5% silver and 95% lead at 305°C. Draw a schematic phase diagram for the silver-lead system. Label all the parts of the diagram. Indicate the number of components, phases and degrees of freedom present at the eutectic point.
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