HDaily Problem "29Fill in the reagents?OH↓

Answered: H Daily Problem "29 Fill in the…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 53QAP

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Acetylene is a very weak acid; however, it will react with moist silver(I) oxide and form water and a compound composed of silver and carbon. Addition of a solution of HCl to a 0.2352-g sample of the compound of silver and carbon produced acetylene and 0.2822 g of AgCl. (a) What is the empirical formula of the compound of silver and carbon? (b) The production of acetylene on addition of HCl to the compound of silver and carbon suggests that the carbon is present as the acetylide ion, C22-. Write the formula of the compound showing the acetyl ide ion.
The key step in a reported laboratory synthesis of sativene, a hydrocarbon isolated from the mold Helminthosporium sativum, involves the following base treatment of a keto tosylate. What kind of reaction is occurring? How would you complete the synthesis?
13*32 Black-and-white photography is a commercial process that involves a phenol. Black-and-white film is coated with an emulsion containing silver bromide or silver iodide crystals that become activated by exposure to light. The activated silver ions then react with hydroquinone in the developing stage as shown in the following balanced equation. All silver halide not activated by light is removed in the fixing process, and the result is a black image (a negative) left by the deposited metallic silver where the film had been struck by fight. In this redox reaction state: What is reduced and what is the reducing agent? What is oxidized and what is the oxidizing agent?
Thioglycolic acid, HSCH2CO2H, a substance used in depilatory agents (hair removers) has pKa = 3.42. What is the percent dissociation of thioglycolic acid in a buffer solution at pH = 3.0?
In each equilibrium, label the stronger acid, the stronger base, the weaker acid, and the weaker base. Also estimate the position of each equilibrium. (a) CH3CH2O + CH3CCH CH3CH2OH + CH3CC (b) CH3CH2O + HCl CH3CH2OH + Cl (c) CH3COOH + CH3CH2O CH3COO + CH3CH2OH
The following data for isomeric four-carbon alcohols show that there is a decrease in boiling point with increasing substitution of the OH-bearing carbon. How might you account for this trend? 1-Butanol, bp 117.5C 2-Butanol, bp 93.5C 2-Methyl-2-propano1, bp 32.2C
16-26 The p/fb of amphetamine is approximately 3.2 Amphetamine (a) Which form of amphetamine (the free base or its conjugate acid) would you expect to be present at pH 1.0, the pH of stomach acid? (b ) Which form of amphetamine would you expect to be present at pH 7.40, the pH of blood plasma?
For each molecule below, draw the conjugate acid or conjugate base or both if the molecule hasboth a conjugate acid and a conjugate base (e.g., water).
Using the Ka value of , place Al(H2O)63+ in the correct location in Figure 14.8.
When a carboxylic acid is dissolved in isotopically labeled water, the label rapidly becomes incorporated into both oxygen atoms of the carboxylic acid. Explain.
18-4 Answer true or false. (a) The functional groups of a carboxylic acid are a carbonyl group bonded to a hydroxyl group. (b) The VSEPR model predicts bond angles of 180° about the carbonyl carbon of a carboxyl group. (c) The VSEPR model predicts bond angles of 109.5° about the oxygen of the OH group of a carboxyl group. (d) The carbonyl carbon of a carboxyl group can be a stereocenter, depending on its location within a molecule. (e) Carboxylic acids can be prepared by chromic acid oxidation of primary alcohols and of aldehydes. (f) The product of chromic acid oxidation of hexanoic acid is 1-hexanol.
Summarize the relationship between pKa and acid strength by completing the following sentences: a. The higher the pKa of an acid, the stronger or weaker the acid. b. The lower the pKa of an acid, the stronger or weaker the acid.

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H Daily Problem "29 Fill in the reagents ? OH ↓