Polyprotic acids - Study guides, Class notes & Summaries

Acid and Bases + Buffer buffer capacity - correct answer a measure of the effectiveness of a buffer solution to resist a change in pH when either a strong acid or strong base is added buffer capacity is greatest when: - correct answer - there is a high concentration of the weak acid and its conjugate base - the concentrations of the acid and its conjugate base are equal. Properties of acids and bases - correct answer Acids- litmus red Sour (vinegar) Frequently burns nose tends to b...

What are the Bronsted-Lowry definitions of acid and base? Acids donate H+ and Bases accept H+ (BAAD) What is the difference between a strong acid and a weak acid? Give examples of each. Strong acids completely dissociate into anion and H+. Weak acids do not dissociate completely into anion and H+, they form an equilibrium system and reform acid and anion and H+ continuously. Strong acid ex. HCl and H2SO4 Weak acid ex. H3PO4 and HC2H3O2 What is the difference between a strong ...

Chem Lab Final Exam Complete Updated Solution polyprotic acid - answeran acid that can donate more than one proton per molecule monoprotic acid - answeran acid that can donate only one proton per molecule What were the objectives for Experiment 5? - answerto understand the difference between polyphonic and monoprotic acids, learn the basics of the pH scale, learn how to perform an acid-base titration, compare and contrast two methods for detection of the estimated equivalence point of an aci...

Biochemistry 100% complete Question and Answers 2024 Final Exam enzyme regulation 1. regulated at allosteric site 2. regulated by modifications like phosphorylation on vs. off states negative feedback- product inhibits enzyme positive feedback- product activates enzyme oxytocin is example of positive feedback, needs external regulator to eventually stop process oxidation/reduction loss/gain of hydrogen atoms, gain/loss of charge Bronsted-Lowry acid/base proton donor/acceptor Lewis ...

Acid-Base Equilibria Questions and Answers Bronsted-Lowry Acid & Base: -Bronsted-Lowry Acid is the proton donor -Bronsted-Lowry Base is the proton acceptor Conjugate Acid & Base: -Conjugate Acid is formed from a Bronsted-Lowry Base accepting a proton -Conjugate Base is formed from a Bronsted-Lowry Acid donating a proton Lewis Acid & Base: -Lewis Acid is an electron pair acceptor -Lewis Base is an electron pair donor Arrhenius Acid & Base: -Acid produces an excess o...

Chemistry II ACS Exam 91 Questions with Verified Answers Phase - CORRECT ANSWER a physically distinct and homogenous part of a system intermolecular forces - CORRECT ANSWER the attractive and repulsive forces among the particles-molecules, atoms or ions in a sample of matter heat of vaporization - CORRECT ANSWER the enthalpy change occurring when 1 mol of a liquid substance vaporizes heat of fusion - CORRECT ANSWER the enthalpy change occurring when 1 mol of a solid melts heat of ...

Chapter 1—The Facts of Life: Chemistry Is the Logic of Biological Phenomena MULTIPLE CHOICE 1. All are distinctive properties of living systems EXCEPT: a. Living organisms are relatively simple. b. Biological structures play a role in the organism's existence. c. The living state is characterized by the flow of energy through the organism. d. Living organisms are highly organized. e. Living organisms are actively engaged in energy transformation. ANS: A PTS: 1 2. Even though the bui...

100 Biochemistry Exam 1 Questions with correct answers Which of the following is found in RNA but not DNA A) Uracil B) Guanine C) Deoxyribose D) Phosphate E) Adenine >>>>Uracil Which of the following amino acids exhibits significant ultraviolet absorption above 250 nm? A) Alanine B) Tyrosine C) Methonine D) Glycine E) All of the above >>>>Tyrosine Collagen fibers have a high content of which amino acids? A) histidine, tyrosine, and proline B) proline, hyd...

100 Biochemistry Exam 1 Questions with correct answers Which of the following is found in RNA but not DNA A) Uracil B) Guanine C) Deoxyribose D) Phosphate E) Adenine >>>>Uracil Which of the following amino acids exhibits significant ultraviolet absorption above 250 nm? A) Alanine B) Tyrosine C) Methonine D) Glycine E) All of the above >>>>Tyrosine Collagen fibers have a high content of which amino acids? A) histidine, tyrosine, and proline B) proline, hy...

Different Nitrogen names - ANSWER Enamine: C=C-N Amine : C-N Imine: C=N Amide: O=C-N Imide: O=C-N-C=O Ketone(aldehyde) + 1° amine --> Imine Ketone(aldehyde) + 2° amine ---> Enamine think about it when replace the Oxygen of carbonyl and attach NitrogenR, /Make sure It has a lone pair. for the 2 ° amine move double bond to the C. Amine - ANSWER C-N Myopia (nearsighted) - ANSWER *(-)F= diverging mirror /convex mirror/concave lens *convex mirror: image always virtual...