what is law of definite proportion?
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The law of definite proportion : A chemical compound eternally
holds exactly the same proportion of elements by mass. This sometime also called Proust's Law.
anuanitsaa:
SIMPLY WE CAN SAY THAT.in a chemical substance the elements are present in definite proportion by mass.also called law of constant proportion.
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The Law Of Definite Proportion:
- This law tells us that a chemical compound that is pure always consists of the same elements combined together in a fixed proportion by weight.
- This law was proposed by Joseph Proust.
- Let us understand this law with the help of an example.
- Case 1: Burning Coke In Air: C(s) + O2(g) --Heat---> CO2(g). In this reaction we combine coke which is an allotrope of carbon with oxygen. To form Carbon Dioxide.
- By the decomposition of Limestone in Air: Lets see the chemical reaction. CaCO3 ----heat--> CaO(s) + CO2(g) Calcium carbonate on decomposition reaction will give calcium oxide and carbon dioxide.
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