Concept explainers
Interpretation:
The ratio that is same as the coefficients present in a balanced chemical equation is to be predicted.
Concept introduction:
The stoichiometry of a chemical species involved in a
Answer to Problem 1CE
The ratio of coefficients of the stoichiometry present in the reaction is equals to the moles of gas and the volume of gas but is not equal to the mass of gas
Explanation of Solution
Consider a reaction between A and B to form C.
In the above reaction,
The formula to determine molarity is shown below.
Where
•
•
•
Rearrange the above equation as shown below.
The above relation shows that the volume of gas is directly proportional to the number of moles of a gas. Therefore, the number of moles of a gas in the equation (1) is same for A, B and C. This means the ratio of the coefficients of the stoichiometry present in the reaction is equals to the volume of gas.
The formula to determine the number of moles is shown below.
Rearrange the above equation as shown below.
The above relation shows that the mass of a substance is dependent on the molar mass of a substance. The molar mass of every substance is different. Therefore, the ratio of coefficients of the stoichiometry present in the reaction is not equal to the mass of gas.
The ratio of coefficients of the stoichiometry present in the reaction is equals to the moles of gas and the volume of gas.
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Chapter 9 Solutions
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
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