Question

what is the importance of the coeffcients in a balanced chemical reaction

Answer 1

A balanced chemical equation reflects the law of \(conservation~ of~ mass\). The coefficients are what represent how many of each atom, molecule or formula unit take part in each reaction, so they balance the equation.

So to sum it up, coefficients balance the equation, and balanced equations are needed to reflect the law of conservation of mass.

Answer 2

thank you

Answer 3

When a chemical equation is balanced, the numbers next to each compound/element involved in the reaction are called their "coeffecients".

For example, in:
2H2 + O2 ----> 2H2O
The coeffecient of H2 is 2, O2 is 1, and H2O is 2.

These co-effecients are important because they allow the equation to obey the "Law of Conservation of Mass."

Suppose there were no co-effecients, i.e., the reaction was not balanced:
H2 + O2 ----> H2O
What the equation now tells us is that on the product side, there are 2 atoms of Hydrogen and 2 atoms of Oxygen, but on the Reactant side, there are 2 atoms of Hydrogen but only 1 atom of Oxygen.

What happens to the other atom? To say it simply "disappears" is a violation of the Law of Conservation of Matter, which states that matter cannot be created or destroyed.

Instead, balancing the equation tells us that For every 2 parts of Hydrogen and 1 part of Oxygen which react, we get 2 parts of Water. This equation, you will find, obeys the Law of Conservation of Matter.