WebWhich element has the lowest electronegativity value in these molecules? _A_ Each oxygen atom is very electronegative and attracts electrons. In which acid will the 1--1+ be most likely ... H2Se and H2Te. Rank these acids in order of increasing strength: Write notes to ourself about acid stren th: HOCI, HOBr, HOI HOCI, HC102, HC103, HC104 HF ... WebHydrosulfuric acid, H 2 S, is a weak acid whose K a value is 9.5x10 -8. What is the pH of a 4.0 M solution of H 2 S? Weak Acids: Hydrosulfuric acid is a weak acid because it doesn't completely...
CHEM 1332 - Ch. 13 Flashcards Quizlet
WebNov 24, 2024 · Since the power of the Ka is -10, we can safely assume that the x is small enough to ignore compared to the 0.0620, so it becomes 4.9E-10=x 2 /0.0620. From that x (which is equilibrium [H +]), we can calculate pH = -log[H +]. WebJan 30, 2024 · A large Ka value indicates a stronger acid (more of the acid dissociates) and small Ka value indicates a weaker acid (less of the acid dissociates). For a chemical … christian loveless marriage
Table of Common Ka Values for Weak Acids - ThoughtCo
Industrially, it is produced by treating elemental selenium at T > 300 °C with hydrogen gas. A number of routes to H2Se have been reported, which are suitable for both large and small scale preparations. In the laboratory, H2Se is usually prepared by the action of water on Al2Se3, concomitant with formation of hydrated alumina. A related reaction involves the acid hydrolysis of FeSe. WebWhich of the following substances has the largest value for Ka,1? (a) H2Se (b) H2S (c) AsH3 (d) SiH4 (e) CH4 (f) NH3 This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer Question: Which of the following substances has the largest value for Ka,1? WebFeb 3, 2024 · The value of K a is used to calculate the pH of weak acids. The pK a value is used to choose a buffer when needed. Choosing an acid or base where pK a is close to … christian love live modesto youtube