**Title: Solubility of Cinchonine in Acidic Solutions****Text:**Cinchonine is more soluble in water when some acid (such as HCl or H₂SO₄) is added.**Explanation:**This observation can be explained by the formation of a more soluble salt form of cinchonine when it reacts with an acid. The basic nitrogen atom in the cinchonine molecule can be protonated by the acid to form a cinchonine salt (e.g., cinchonine hydrochloride or cinchonine sulfate). This salt formation enhances its solubility in water compared to its neutral form.**Relevant Structure:**In the structure of cinchonine, the nitrogen atom in the quinoline moiety can accept a proton from an acid. The transformation results in a positively charged ammonium ion, which interacts more favorably with the polar solvent molecules, increasing its solubility.**Diagram:**No specific diagram is provided, but a representation of the protonation of the nitrogen atom could help visualize this solubility process.

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Answered: Cinchonine is more soluble in water…

Cinchonine is more soluble in water when some acid (such as HC1 or H₂SO4) is added. Explain that observation and provide any relevant structure to support your answer.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

**Title: Solubility of Cinchonine in Acidic Solutions**

**Text:**

Cinchonine is more soluble in water when some acid (such as HCl or H₂SO₄) is added.

**Explanation:**

This observation can be explained by the formation of a more soluble salt form of cinchonine when it reacts with an acid. The basic nitrogen atom in the cinchonine molecule can be protonated by the acid to form a cinchonine salt (e.g., cinchonine hydrochloride or cinchonine sulfate). This salt formation enhances its solubility in water compared to its neutral form.

**Relevant Structure:**

In the structure of cinchonine, the nitrogen atom in the quinoline moiety can accept a proton from an acid. The transformation results in a positively charged ammonium ion, which interacts more favorably with the polar solvent molecules, increasing its solubility.

**Diagram:**

No specific diagram is provided, but a representation of the protonation of the nitrogen atom could help visualize this solubility process.

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