Concept explainers
(a)
Interpretation: The balanced molecular equation and net ionic equation for the given reactions is to be stated.
Concept introduction: A balanced chemical equation is based on the law of conservation of mass for a closed system. According to this law, the mass of the products formed in a
In net ionic equations the same ions that are present on both the sides of reaction are cancelled out.
To determine: The overall ionic and net ionic equation for the given reaction.
(a)

Answer to Problem 4.59QP
Solution
The balanced reaction between
The net ionic equation is,
Explanation of Solution
Explanation
When an acid reacts with a base it forms a salt and water and this type of reaction is known as neutralization reaction.
According to the solubility rules, magnesium hydroxide act as a weak electrolyte as it is insoluble in water and only some ions go into solution.
The complete reaction between
According to the law of conservation of mass, the mass of the reactants that take part in a chemical reaction is equal to the mass of the products formed in the reaction.
In the given reaction, the number of magnesium and sulphur atoms present on the reactant side is equal to their number on the product side. The number of oxygen and hydrogen atom present on the reactant side is not equal to their number on the product side. The coefficient
The balanced reaction between
The dissociation reaction of
In overall ionic reaction all the ions that are taking part in a reaction is represented in an equation.
Therefore, the overall ionic reaction is,
The ions that are present on both sides of the reaction are called spectator ions and are omitted from the reaction to represents the actual reactants and product.
Hence, the net ionic equation is,
(b)
To determine: The overall ionic and net ionic equation for the given reaction.
(b)

Answer to Problem 4.59QP
Solution
The balanced reaction between
The net ionic equation is,
Explanation of Solution
Explanation
When an acid reacts with a base it forms a salt and water and this type of reaction is known as neutralization reaction.
According to the solubility rules, magnesium carbonate act as a weak electrolyte as it is insoluble in water and only some ions go into solution.
The complete reaction between
According to the law of conservation of mass, the mass of the reactants that take part in a chemical reaction is equal to the mass of the products formed in the reaction.
In the given reaction, the number of carbon magnesium and oxygen atoms present on the reactant side is equal to their number on the product side. The number of hydrogen and chlorine atom present on the reactant side is not equal to their number on the product side. The coefficient
The balanced reaction between
In overall ionic reaction all the ions that are taking part in a reaction is represented in an equation.
The dissociation of
The dissociation of carbonic acid is,
Therefore, the overall ionic reaction is,
The ions that are present on both sides of the reaction are called spectator ions and are omitted from the reaction to represents the actual reactants and product.
Hence, the net ionic equation is,
(c)
To determine: The overall ionic and net ionic equation for the given reaction.
(c)

Answer to Problem 4.59QP
Solution
The balanced reaction between
The net ionic equation is,
Explanation of Solution
Explanation
When an acid reacts with a base it forms a salt and water and this type of reaction is known as neutralization reaction.
The complete reaction between
According to the law of conservation of mass, the mass of the reactants that take part in a chemical reaction is equal to the mass of the products formed in the reaction.
In the given reaction, the number of nitrogen, hydrogen and chlorine atoms present on the reactant side is equal to their number on the product side. Therefore the above reaction is a balanced reaction.
The balanced reaction between
Since, no aqueous solution is present; there is no need to show ions in the equation.
Therefore, the molecular equation and net ionic equation is same.
Hence, the net ionic equation is,
(d)
To determine: The overall ionic and net ionic equation for the given reaction.
(d)

Answer to Problem 4.59QP
Solution
The balanced reaction between
The net ionic equation is,
Explanation of Solution
Explanation
When an acid reacts with a base it forms a salt and water and this type of reaction is known as neutralization reaction.
The complete reaction between
The reaction between
According to the law of conservation of mass, the mass of the reactants that take part in a chemical reaction is equal to the mass of the products formed in the reaction.
In the given reaction, the number of sulphur atoms present on the reactant side is equal to their number on the product side. The number of hydrogen, oxygen and sodium atom present on the reactant side is not equal to their number on the product side. The coefficient
The balanced reaction between
In overall ionic reaction all the ions that are taking part in a reaction is represented in an equation.
The first dissociation reaction of
The second dissociation reaction of
The dissociation reaction of
Therefore, the overall ionic reaction is,
The ions that are present on both sides of the reaction are called spectator ions and are omitted from the reaction to represents the actual reactants and product.
Hence, the net ionic equation is,
Conclusion
The balanced reaction between
The net ionic equation is,
The balanced reaction between
The net ionic equation is,
The balanced reaction between
The net ionic equation is,
The balanced reaction between
The net ionic equation is,
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Chapter 4 Solutions
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