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Chapter 7: Q165 (page 240)

Question: Calculate the pH of 6.0 × 10-4 M NaNO2.

Short Answer

Expert verified

Answer

pH of the given salt is 7.1

Step by step solution

01

 Calculation of Kb for Hydrolysis

Species present are Na+, NO2- and H2O.

Since, HNO2 is a weak acid hence NO2- ion has strong affinity for H+ so, the dominating reaction will be

02

Calculation of [OH-] for Given Salt

Concentrations are given by ICE table as:

03

Calculation of pH for Given Salt

As we came to know that,

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Most popular questions from this chapter

Calculate the concentration of an aqueous Ba(OH)2 solution that has pH = 10.50.

Question:Consider the following statements. Write out an example reaction and K expression that are associated with each statement.

a. The autoionization of water.

b. An acid reacts with water to produce the conjugate base of the acid and the hydronium ion.

c. A base reacts with water to produce the conjugate acid of the base and the hydroxide ion.

Question: Arrange the following 0.10 M solutions in order from most acidic to most basic.

CaBr2, KNO2, HClO4, HNO2, HONH3ClO4, and NH4NO2

Calculate the percent dissociation for a 0.22 M solution of chlorous acid (HClO2, Ka = 1.2 × 10-2).

Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH of a 0.040 M HClO4 solution. Calculate Ka for trichloroacetic acid.
See all solutions

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