Concept explainers
Interpretation:
The meaning for the statement that balanced chemical equation describes the stoichiometry of the reaction needs to be explained.
Concept Introduction:
- A
chemical reaction is represented in terms of a chemical equation with the reactants on the left and the products on the right - The coefficient of a balanced chemical equation i.e. the stoichiometry gives the amount of reactants and products involved in the reaction.
Answer to Problem 12A
A balanced chemical equation describes the amounts of reactants and products in terms of the
Explanation of Solution
'Stoichiometry' is a term that refers to the amount or measure of elements. For balanced chemical equations, 'stoichiometry' helps to establish a correct relation between the amounts of reactants and products, in terms of a mole-mole ratio. Hence, it can be used to determine the amount of products formed from a known quantity of reactants.
For example consider the formation of ammonia (NH3) from N2 and H2. The reaction is:
The balanced equation is:
As per the reaction stoichiometry:
1 mole of N2 reacts with 3 moles of H2 to form 2 moles of NH3
Therefore, the relative amounts of reactants and products can be identified from the reaction stoichiometry.
Chapter 9 Solutions
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