Textbook Question
Determine whether each cation is acidic or pH-neutral. For those cations that are acidic, write an equation that shows how the cation acts as an acid. d. CH2NH3+
Ch.16 - Acids and Bases
Chapter 16, Problem 101a,b,c,d
Determine if each salt will form a solution that is acidic, basic, or pH-neutral. a. FeCl3 b. NaF c. CaBr2 d. NH4Br
Verified step by step guidance1
Identify the cation and anion in each salt.
Determine if the cation is acidic, basic, or neutral.
Determine if the anion is acidic, basic, or neutral.
Combine the properties of the cation and anion to predict the pH of the solution.
Summarize the pH nature (acidic, basic, or neutral) for each salt based on the analysis of its ions.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Salt Hydrolysis
Salt hydrolysis is the reaction of a salt with water to produce an acidic or basic solution. When a salt dissolves in water, its constituent ions can interact with water molecules, leading to the formation of hydronium ions (H3O+) or hydroxide ions (OH-), which determine the pH of the solution.
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00:50
Ionic Salts
Acidic and Basic Ions
The nature of the ions derived from a salt influences whether the solution will be acidic, basic, or neutral. Cations from strong acids (like HCl) and anions from strong bases (like NaOH) typically yield neutral solutions, while cations from weak bases or anions from weak acids can lead to acidic or basic solutions, respectively.
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pH Scale
The pH scale measures the acidity or basicity of a solution, ranging from 0 to 14. A pH of 7 is considered neutral, below 7 is acidic, and above 7 is basic. Understanding the pH scale is essential for predicting the behavior of solutions formed from salts, as it helps classify the resulting solution based on the concentration of H3O+ and OH- ions.
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Related Practice
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Determine if each salt will form a solution that is acidic, basic, or pH-neutral. b. C2H5NH3NO3 c. K2CO3 d. RbI e. NH4ClO