   Chapter 14, Problem 59E

Chapter
Section
Textbook Problem

# Calculate the concentration of an aqueous HI solution that has pH = 2.50. HI is a strong acid.

Interpretation Introduction

Interpretation:

The concentration of the given aqueous solution of HI that has a pH value of 2.50 is to be calculated.

Concept introduction:

The pH of a solution is define as a figure that expresses the acidity of the alkalinity of a given solution.  A logarithmic scale is used on which, the value 7 corresponds to a neutral species, a value less than 7 corresponds to an acid and a value greater than 7 corresponds to a base.

The pH of a solution is calculated by the formula, pH=log[H+]

Explanation

Explanation

To determine: The concentration of the given aqueous solution of HI that has a pH value of 2.50 .

Given

pH=2.50

The [H+] is calculated by the formula, [H+]=10pH

The pH of a solution is calculated by the formula,

pH=log[H+]

Rearrange the above expression to calculate the value of [H+] .

[H+]=10pH (1)

The concentration of the given aqueous solution of HI is 3.2×10-3M_

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