Question

Story of chemical reactions ( balancing act)l

Answer 1

Answer:

Chemical equations are an efficient way to describe chemical reactions. ... It shows how balanced chemical equations convey proportions of each reactant and ... A brief history of the chemical equation.

Answer 2

Explanation :

Chemical reaction : It is defined as the reaction in which the one or more reactants converted to one or more different substances known as product.

The reactants and product are separated by right arrow.

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.

Some symbols used in the chemical reaction are :

The symbol $(\Delta)$ is used for temperature.

The symbol (s), (l), (g) and (aq) are used for the representation of physical states.

For example :

The unbalanced chemical reaction is,

$Al(s)+O_2(g)\rightarrow Al_2O_3(s)$

This reaction is an unbalanced chemical reaction because in this reaction number of aluminium and oxygen atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the $Al_2O_3$, the coefficient '3' put before the $O_2$ and the coefficient '4' put before the $Al$ then we get the balanced chemical equation.

The balanced chemical reaction will be,

$4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)$

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