Question

Which information is not conveyed by a balanced chemical equation?
A.Physical states of reactants and products
B.Symbols and formulae of all the substances involved in a particular reaction
C.Number of atoms/molecules of the reactants and products formed
D.Whether a particular reaction is actually feasible or not

Answer 1

Hint: The representation of a chemical reaction in the form of substances is known as a chemical equation, in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.

Complete answer:
- A balanced chemical reaction is an equation that has equal numbers of each atom of a molecule on both sides of the arrow.
- Law of conservation of mass governs the balancing of a chemical equation. According to which, mass can neither be created nor be destroyed in a chemical reaction
- Obeying this law total mass of the elements or molecules present on the reactant side should be equal to the total mass of elements or molecules present on the product side. If the chemical equation is not balanced, the law of conservation is not applicable.
- Hence, a balanced equation conveys a basic knowledge about the respective formula of the reactant and product, their respective masses, and the total number of molecules present in the reaction. But it does not tell anything about the feasibility of the reaction.
Therefore, the answer to the question is (D) Whether a particular reaction is actually feasible or not.

Note:
The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, so the number of atoms that are present in the reactants has to balance the number of atoms that are present in the products.