How do the soluble and insoluble impurities effect the melting point? Explain an application in daily...

How do the soluble and insoluble impurities effect the melting point? Explain an application in daily life.

Expert Solution

Soluble impurities affect the melting point of a system. They lower the melting point. Whereas the insoluble impurities will have no effect on the melting point of the system.

Let us take a basic example from day to day life. If you belong to a country where winters welcome heavy snowfall you must have observed that people sprinkle salt over ice accumulated outside to melt that away. Salt is a soluble impurity.(NaCl is soluble in water) The melting point lowers and this is one of the colligative properties. The depression in melting point is given by T_f= i*m*K_f

where i is vant hoff factor, m is molality and k_f is the melting point depression constant

On the other hand if we put turmeric on ice there won't be any change in melting point as turmeric is insoluble in water.

I know may be the examples are too basic but these are easy to understand.

Hope you find it helpful. Have a great day ahead!!!

queen_honey_blossom answered 2 years ago

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