
Interpretation:
The balanced equation for formation of
Concept introduction:
The Gibbs free energy or the free energy change is a
- Chemical equation is the representation of a chemical reaction, in which the reactants and products of the reactions are represented left and right side of an arrow respectively by using their respective chemical formulas.
- Reactant of a chemical reaction is the substrate compounds or the compounds which undergo a chemical reaction.
- Product of a chemical reaction is the produced compounds or the compounds formed after a chemical reaction.
- Balanced chemical equation of a reaction is written according to law of conservation of mass.
Moles: One mole is equivalent to the mass of the substance consists same number of units equal to the atoms present in
From given mass of substance moles could be calculated by using the following formula,

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Chapter 18 Solutions
Chemistry & Chemical Reactivity
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