Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
![**Chlorous Acid and pH Calculation**
**Problem Statement:**
Chlorous acid, \( \text{HClO}_2 \), has a \( K_a = 1.2 \times 10^{-2} \). Calculate the pH when 0.15 mol of \( \text{HClO}_2 \) is dissolved in 1 L of water to make an aqueous solution.
**Solution Approach:**
1. **Identify the Chemical Equation:**
- Dissociation of chlorous acid:
\[ \text{HClO}_2 \rightleftharpoons \text{H}^+ + \text{ClO}_2^- \]
2. **Use the Ionization Constant \( K_a \):**
\[ K_a = \frac{[\text{H}^+][\text{ClO}_2^-]}{[\text{HClO}_2]} \]
3. **Initial Concentration:**
- \([\text{HClO}_2] = 0.15 \, \text{M}\)
- \([\text{H}^+] = [\text{ClO}_2^-] = 0\)
4. **Calculate Change in Concentration:**
- Let \( x \) be the concentration of \( \text{H}^+ \) that dissociates:
- \( [\text{HClO}_2] = 0.15 - x \)
- \( [\text{H}^+] = [\text{ClO}_2^-] = x \)
5. **Set Up the Expression and Solve for \( x \):**
\[ 1.2 \times 10^{-2} = \frac{x^2}{0.15 - x} \]
6. **Assume \( x \) is small compared to 0.15 M and solve:**
\[ 1.2 \times 10^{-2} \approx \frac{x^2}{0.15} \]
\[ x^2 = 1.2 \times 10^{-2} \times 0.15 \]
\[ x^2 = 1.8 \times 10^{-3} \]
\[ x = \sqrt{1.8 \times 10^{-3}} \](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbbeeb476-a64f-4459-b8af-acf5dbdffec4%2F537eb873-846c-4682-b0dc-d420840c6385%2Fr10gn8_processed.png&w=3840&q=75)
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