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Concept explainers
(a)
Interpretation:
The Ka expression for the given HCN acids in water has to be written.
Concept introduction:
Balancing reaction:
Balanced reaction is a
Steps in balancing the information.
- Step 1: Write the unbalanced equation
- Step 2: Find the coefficient to balance the equation.
- The coefficient should be reduced to the smallest whole number.
An equilibrium constant (K) is the ratio of concentration of products and reactants raised to appropriate
For the general acid HA,
HA(aq)+H2O(l)⇌H3O+(aq)+A−(aq)
The relative strength of an acid and base in water can be also expressed quantitatively with an equilibrium constant as follows:
Ka=[H3O+][A−][HA] (1)
An equilibrium constant (K) with subscript a indicate that it is an equilibrium constant of an acid in water.
(b)
Interpretation:
The Ka expression for the given HCO−3 acids in water has to be written.
Concept introduction:
Balancing reaction:
Balanced reaction is a chemical reaction in which number of atoms for each element in the reaction and the total charge are same on both reactant side and the product side.
Steps in balancing the information.
- Step 1: Write the unbalanced equation
- Step 2: Find the coefficient to balance the equation.
- The coefficient should be reduced to the smallest whole number.
An equilibrium constant (K) is the ratio of concentration of products and reactants raised to appropriate stoichiometric coefficient at equlibrium.
For the general acid HA,
HA(aq)+H2O(l)⇌H3O+(aq)+A−(aq)
The relative strength of an acid and base in water can be also expressed quantitatively with an equilibrium constant as follows:
Ka=[H3O+][A−][HA] (1)
An equilibrium constant (K) with subscript a indicate that it is an equilibrium constant of an acid in water.
(c)
Interpretation:
The Ka expression for the given HCOOH acids in water has to be written.
Concept introduction:
Balancing reaction:
Balanced reaction is a chemical reaction in which number of atoms for each element in the reaction and the total charge are same on both reactant side and the product side.
Steps in balancing the information.
- Step 1: Write the unbalanced equation
- Step 2: Find the coefficient to balance the equation.
- The coefficient should be reduced to the smallest whole number.
An equilibrium constant (K) is the ratio of concentration of products and reactants raised to appropriate stoichiometric coefficient at equlibrium.
For the general acid HA,
HA(aq)+H2O(l)⇌H3O+(aq)+A−(aq)
The relative strength of an acid and base in water can be also expressed quantitatively with an equilibrium constant as follows:
Ka=[H3O+][A−][HA] (1)
An equilibrium constant (K) with subscript a indicate that it is an equilibrium constant of an acid in water.
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Chapter 18 Solutions
Chemistry: The Molecular Nature of Matter and Change - Standalone book
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