Calcule la concentración molar de iones OH^-de una disolución 1.15 M de ion hipobromito (HBrO^-)

step 1 Problem 74. In this problem, we need to find out hydroxyion concentration and pH of solution. So

Calcule la concentración molar de iones OH^-de una...

Calcule la concentración molar de iones $\mathrm{OH}^{-}$de una disolución $1.15 \mathrm{M}$ de ion hipobromito $\left(\mathrm{HBrO}^{-}\right)\left(K_b=4.0 \times\right.$ $10^{-6}$ ). ¿Cuál es el pH de esta disolución?

Key Concepts

Base Hydrolysis Reaction

This concept refers to the reaction in which a weak base reacts with water to produce its conjugate acid and hydroxide ions. It underpins the understanding of how certain anions, acting as weak bases, affect the pH of the solution by increasing the concentration of OH? through their interaction with water.

Dissociation Constant (Kb)

The base dissociation constant, Kb, is a numerical value that quantifies the strength of a weak base in solution by expressing the equilibrium concentrations of the products and reactants. It is essential for determining the extent of the base’s hydrolysis and calculating the concentration of hydroxide ions at equilibrium.

Equilibrium Approximation Methods

In systems where the degree of ionization is low, approximation methods can be used to simplify the equilibrium calculations. This typically involves assuming that the change in concentration is small relative to the initial concentration, allowing for the simplification of algebraic expressions when solving for unknown species.

pH and pOH Relationship

The pH of a solution is related to the pOH through the water dissociation constant, using the relation pH + pOH = 14 under standard conditions. Understanding this relationship is crucial for converting between the hydroxide ion concentration and the acidity of the solution to determine its pH.

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