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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Write an equation that describes the equilibrium that exists when the weak acid benzoic acid (C6H5CO2H) dissolves in water. Identify each of the four species in solution as either Brønsted acids or Brønsted bases. Does the equilibrium favor the products or the reactants? (In acting as an acid, the —CO2H group supplies H+ to form H3O+.)

Interpretation Introduction

Interpretation:

  • An equation that describes the equilibrium exist when benzoic acid dissolved in water has to be written.
  • The equilibrium reaction, favoring the reaction whether reactant or product should be identified for the reaction of nitric acid with water,

Concept introduction:

Equilibrium reaction: chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time therefore no change in the system property in a chemical reaction.

The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, therefore, the number of atoms present in the reactants is equal to the number of atoms present in the products.

Bronsted acid: An acid donates (loses)H+ ion.

Bronsted Base: A base accepts (gains)H+ ion.

Explanation

The equilibrium reaction is shown below

  

Benzoic acid dissolves in water which exist as a Bronsted acid (An acid donates H+ ion) or Bronsted Base (A base accepts H+ ion).

Benzoic acid is weak acid therefore it donates the H+ ion to the water molecule which forms H3O+(aq) and C6H5CO2-(aq), at equilibrium H3O+(aq) donates the H+ ion to

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