Poh equation - Study guides, Class notes & Summaries

henderson hasselbach equation: - correct answer pH = pKa + log ([conj. base]/[weak acid]) pOH = pKb + log([conj. acid]/[weak base]) percent comp by mass (solution) = - correct answer mass solute / (mass solute + solution) mole fraction = - correct answer moles of compount / total moles in system molarity = - correct answer moles solute/liters solution molality = - correct answer # moles of solute / kg of solvent normality = - correct answer # of equivalents of solute / liters o...

The dipole moment in a water molecule Which statement about hydrogen bonds is NOT true? A) Hydrogen bonds account for the anomalously high boiling point of water. B) In liquid water, the average water molecule forms hydrogen bonds with three to four other water molecules. C) Individual hydrogen bonds are much weaker than covalent bonds. D) Individual hydrogen bonds in liquid water exist for many seconds and sometimes for minutes. E) The strength of a hydrogen bond depends on the linearit...

Complete study guide for CHEM 1212 Exam 3 Questions with solutions 100% Relationship between Q and K when Delta G = 0 - CORRECT ANSWER-Q = K Relationship between Q and K when Delta G < 0 (negative) - CORRECT ANSWER-K > Q Relationship between Q and K when Delta G > 0 (positive) - CORRECT ANSWER-K < Q When Q = K, the reaction is - CORRECT ANSWER-is in equilibrium When Q < K - CORRECT ANSWER-products are favored, shift right When Q > K - CORRECT ANSWER-reactants are fa...

CHEM 207 REVIEW EXAMS QUESTIONS AND ANSWERS Practice questions for the exam with solutions. For you to do well on the exam, please work on the questions before looking at the solutions. If you find an error, let me know so I can let everyone know. REMEMBER THE EXAM IS ON Monday, Sept 28th on Top Hat. The exam will have 20 questions and only one hour. Studying the lecture ppts and lecture questions would also be helpful. Lecture 1A questions: Density and stat analysis, Q and T tables, % Tole...

Chemistry Year 11/12 unit 3 datatest review qcaa. Questions and answers. -log [H+] - -pH formula (in booklet) -log [OH-] - -pOH formula (on booklet) [products]^n/[reactants]^n where n is coefficient (did u know this is on page 1 of the formula booklet) - -Equilibrium constant equation 7 - -Strong acid + strong base, pH = ? 10^-pH - -[H+] formula (not in booklet ) 10^-pOH - -[OH-] formula (not in booklet) 14 - -pH + pOH = 22.4L/mol - -stp 24.5L/mol - -rtp vol/mol above - -base has pH...

Acid-Base Titration Curves Questions and Answers Acid-Base Titration Curves Titration curves show how pH varies during titration Strong Acid-Strong Base Titration Curve 1) Strong Acid-Strong Base Titration Curve. Due to the nature of the log scale i.e. a ten fold change in the [H+] is required to result in a change in pH of only one unit. 2) The pH then increases much more rapidly, and between a pH of about 3.5 and 10.5, the curve is virtually vertical This is due to the fact that ...

UNIT 1: CELLS, WATER, AND BUFFERS BIOCHEMISTRY  The branch of science concerned with the chemical and physiochemical processes and substances that occur within living organisms The four main classes of molecules are: - Carbohydrates (and their building blocks, sugars) - Lipids (and their building blocks, fatty acids) - Proteins (and their building blocks, amino acids) - Nucleic acids (and their building blocks, nucleotides, and ribonucleotides) Six elements make up about 99% of t...

CHEM 102 Winter 18 Final Exam (A) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “A” as your a...

Understand the concepts and calculations of pH and pOH with these comprehensive Chemistry lesson notes. Dive into the world of acidity, and the pH scale as you explore the intricacies of hydrogen ion concentration and hydroxide ion concentration. The notes include; 1. pH and pOH scales 2. Mathematical equation for pH calculation 3. Rules for acidic and basic solutions using pH values 4. Basic rule for using figuring out the pH value 5. Example problems about pH and pOH value calculations ...

CHEM 102 Winter 18 Final Exam (A) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “A” as your a...