Benzoic acid Study guides, Class notes & Summaries

What is the principal form of benzoic acid at pH 8.2 if the pKa value is 4.2 correct answer: So, at pH 4.20, there is a 1:1 mixture of benzoic acid (HA) and benzoate ion (A-). At pH = pKa + 1 (= 5.20), the quotient [A-]/[HA] is 10:1. At pKa + 2 (= 6.20), the quotient [A-]/[HA] is 100:1. As pH increases, all the way to pKa + 4 the [A-]/[HA] is 10000:1 *The predominant form of benzoic acid at pH 8 is the benzoate anion For a monoprotic system, the species ___ is the predominant form when ...

Fpgee exam books W/O emulation is good for produce? - ANS-Lotions,liniments O/W emulations is good for produce? - ANS-Oral emulations for taste Micro emulations is good for produce? - ANS-Solubilization, 10-200 nm Nanoparticle emulsions is good for produce? - ANS-Globulin and toxoid, IGG and tetanus toxoid W/O/W emulations is good for produce? - ANS-Prolong duration of action drug, localize drug in the body, cosmetic Preservatives - ANS-Cetylpyridinium,benzalkonium,thiomersal,cresol,chlo...

Organic Chemistry 234 Lab Exam Questions With 100% Correct Answers What is the proper thing to do shall your clothing catch on fire in the lab? - answerUse the safety shower What is the appropriate way to put out a fire caused by an organic solvent? Why is water not a good choice? - answerUse the fire extinguisher "ABC", water is not a good choice because some flammable materials react violently with water and could make it worse. What should you do when chemicals get in your eye? - ans...

ACS General Chemistry Unit 8 Acids-Bases Multiple Choice 82 Questions with Verified Answers In pure water, some of the molecules ionize according to the equation H2O ⇌ H+ + OH− The extent of the ionization increases with temperature. A student heats pure water and records the measured pH at 50°C as 6.6. Based on this information, which of the following mathematical relationships gives the pOH of pure water at 50°C ? - CORRECT ANSWER pOH = pH In pure water, some of the molecule...

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Chemistry Straighterline questions and answers 100% guaranteed success. An endothermic reaction causes the surroundings to: A. warm up B. become acidic C. condense D. decrease in temperature E. release CO2 - correct answers.D An exothermic reaction causes the surroundings to: A. warm up B. become acidic C. expand D. decrease its temperature E. release CO2 - correct answers.A Copper metal has a specific heat of 0.385 J/g•oC and has a melting point of 1083oC....

Organic Chemistry ACS Final Exam 64 Questions with Verified Answers ketone - CORRECT ANSWER aldehyde - CORRECT ANSWER carboxylic acid - CORRECT ANSWER ester - CORRECT ANSWER amide - CORRECT ANSWER anhydride - CORRECT ANSWER amine - CORRECT ANSWER ether - CORRECT ANSWER constitutional isomers - CORRECT ANSWER same formula, different connectivity stereoisomers - CORRECT ANSWER same formula, different spatial arrangement enantiomers - CORRECT ANSWER non-supe...

Chemistry 1212 Lab Final Exam Complete Questions and Answers Introductory Lab - CORRECT ANSWER-Purpose: Review of sig figs, slope formula (Y2- Y1/X2-X1); percent error formula ([Accepted-Experimental (/) Accepted] x 100%); rounding, scientific notation, & excel. Procedure: Measured various objects for circumference (C=2πr) and diameter (2r), then produced a graph comparing the two factors. Results: N/A Significant Figure Rules - CORRECT ANSWER-1. All non-zeros are significant. Ex: ...

PHARMACY 101 Exam Questions and Answers Latest Updated Rated 100%. Amount administered to a patient after exposure or contraction of the illness a. Prophylactic dose b. Therapeutic dose c. Maintenance dose d. Minimum effective concentration 6. The following are parts of the monograph EXCEPT a. Pharmacologic category 8/29/23, 5:18 PM PHARMACY 101 Exam Questions and Answers 100% Correct/Verified Late… about:blank 3/118 b. Statement of chemical purity c. Official title d. CAS registr...

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