Concept explainers
(a)
Interpretation:
Molar concentration of all the molecular and ionic species present in
(a)
Explanation of Solution
Sodium hydroxide is completely soluble in water and hence it dissociates completely into ions. This can be represented as,
Concentration of
Relation between the concentration of hydroxide ion and hydrogen ion in aqueous solution can be used to calculated the concentration of hydrogen ions,
The concentration of all the ionic species is calculated as,
Molecular species that is involved is water molecule. The molar concentration of water can be calculated by assuming the density of solution to be
Ratio of number of moles of solute that is present in one liter of solution is known as molarity.
The moles of water that is present in one liter of solution can be calculated using density and molar mass as given below,
Therefore, the concentration of molecular species is calculated as
Concentration of all species in
(b)
Interpretation:
Molar concentration of all the molecular and ionic species present in
(b)
Explanation of Solution
Hydrogen chloride is completely soluble in water and hence it dissociates completely into ions. This can be represented as,
Concentration of
Relation between the concentration of hydroxide ion and hydrogen ion in aqueous solution can be used to calculated the concentration of hydrogen ions,
The concentration of all the ionic species is calculated as,
Molecular species that is involved is water molecule. The molar concentration of water can be calculated by assuming the density of solution to be
Ratio of number of moles of solute that is present in one liter of solution is known as molarity.
The moles of water that is present in one liter of solution can be calculated using density and molar mass as given below,
Therefore, the concentration of molecular species is calculated as
Concentration of all species in
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