Question

In: Chemistry

1) why is simpler to identify pure substances compare to mixture? 2)what is supernatant precipiatet? 3)difference...

1) why is simpler to identify pure substances compare to mixture?

2)what is supernatant precipiatet?

3)difference between quantitative vs qualitative analysis?

Solutions

Expert Solution

1) Pure substances are made up of only of that substance and have a clear physical and chemical properties, so they can't be separated into other substances. Mixtures are made up of one or more substances, so they have different type of properties and also depends on the quantity of the substances in the mixture. That's why the identification of mixtures are little difficult than pure substances.

2) the solid is formed when the reaction takes place in liquid solution is called precipitate. The precipitate - free liquid remaining in solution is called as supernate. Pellet form of solid is used as medium and it also known as supernatant precipitate.

3) Qualitative analysis that analyses the composition of a chemical sample to indicate the elements and functional groups present in that sample.

While quantitative analysis are analysis the quantity of elements in that chemical sample. These analysis gives the values of mass, volume, concentration, etc., of the elements.


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