Concept explainers
(a)
Interpretation:
Balanced equation for reaction of acetic acid with sodium carbonate and the reaction of acetic acid with sodium hydrogen carbonate has to be written.
Concept Introduction:
Balanced equation
- Every
chemical reaction obliges Law for conversion of mass which states the mass of total amount of the product should be equal to the total mass of the reactants as matter can neither be destroyed nor be created. - Law of definite proportion states that a chemical compound always contains its constituent elements in a fixed ratio by mass. It does neither depend on the source of the preparation nor depend on the method of preparation.
- A chemical equation is balanced based on the above two laws.
(b)
Interpretation:
Given are two reactions of acetic acid with
(c)
Interpretation:
The amount of heat absorbed or liberated in the given two reactions has to be calculated in kilojoules.
Concept Introduction:
Where,
Heat liberated or absorbed during the reaction is,
Where,
If sign of ‘q’ is negative it implies heat is liberated. If sign of ‘q’ is positive it implies heat is absorbed.
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General Chemistry: Atoms First
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