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Consider the following data on some weak acids and weak bases: acid name formula hypochlorous acid HCIO nitrous acid solution 0.1 MKCIO 0.1 M Nal Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. K₂ 3.0 x 108 HNO₂ 4.5 x 104 0.1 M NaNO₂ 0.1 M C₂HgNH₂Cl PH choose one choose one choose one X base choose one K₂ name formula aniline CH₂NH₂ 4.3x101 ethylamine C₂H₂NH₂ 6.4 x 104

Consider the following data on some weak acids and weak bases: acid name formula hypochlorous acid HCIO nitrous acid solution 0.1 MKCIO 0.1 M Nal Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. K₂ 3.0 x 108 HNO₂ 4.5 x 104 0.1 M NaNO₂ 0.1 M C₂HgNH₂Cl PH choose one choose one choose one X base choose one K₂ name formula aniline CH₂NH₂ 4.3x101 ethylamine C₂H₂NH₂ 6.4 x 104

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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# Predicting the Qualitative Acid-Base Properties of Salts ## Understanding Weak Acids and Weak Bases Consider the following data on some weak acids and weak bases: ### Acids | Name | Formula | \(K_a\) | |-------------------|---------|---------------| | Hypochlorous acid | HClO | \(3.0 \times 10^{-8}\) | | Nitrous acid | HNO₂ | \(4.5 \times 10^{-4}\) | ### Bases | Name | Formula | \(K_b\) | |----------|-------------|---------------| | Aniline | C₆H₅NH₂ | \(4.3 \times 10^{-10}\) | | Ethylamine | C₂H₅NH₂ | \(6.4 \times 10^{-4}\) | ## Task Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. ### Solutions - **0.1 M KCLO** - (Options: Choose one) - **0.1 M NaI** - (Options: Choose one) - **0.1 M NaNO₂** - (Options: Choose one) - **0.1 M C₆H₅NH₃Cl** - (Options: Choose one) Each solution represents a salt formed from the listed acids and bases. The task involves understanding the dissociation constants (\(K_a\) and \(K_b\)) to predict the pH level of each salt solution. ## Explanation The pH ranking will depend on the nature of the ions each salt releases into the solution, affecting the acidity or basicity. - **Salt derived from weak acid and strong base** results in a basic solution. - **Salt derived from strong acid and weak base** results in an acidic solution. Using this understanding, predict the pH level based on the given \(K_a\) and \(K_b\) values.
Transcribed Image Text:# Predicting the Qualitative Acid-Base Properties of Salts ## Understanding Weak Acids and Weak Bases Consider the following data on some weak acids and weak bases: ### Acids | Name | Formula | \(K_a\) | |-------------------|---------|---------------| | Hypochlorous acid | HClO | \(3.0 \times 10^{-8}\) | | Nitrous acid | HNO₂ | \(4.5 \times 10^{-4}\) | ### Bases | Name | Formula | \(K_b\) | |----------|-------------|---------------| | Aniline | C₆H₅NH₂ | \(4.3 \times 10^{-10}\) | | Ethylamine | C₂H₅NH₂ | \(6.4 \times 10^{-4}\) | ## Task Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. ### Solutions - **0.1 M KCLO** - (Options: Choose one) - **0.1 M NaI** - (Options: Choose one) - **0.1 M NaNO₂** - (Options: Choose one) - **0.1 M C₆H₅NH₃Cl** - (Options: Choose one) Each solution represents a salt formed from the listed acids and bases. The task involves understanding the dissociation constants (\(K_a\) and \(K_b\)) to predict the pH level of each salt solution. ## Explanation The pH ranking will depend on the nature of the ions each salt releases into the solution, affecting the acidity or basicity. - **Salt derived from weak acid and strong base** results in a basic solution. - **Salt derived from strong acid and weak base** results in an acidic solution. Using this understanding, predict the pH level based on the given \(K_a\) and \(K_b\) values.
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