Polyprotic Acids And Bases Ch 10-1 – 10-5
Polyprotic Acids and Bases Ch 10-1 – 10-5Third midterm exam on Monday, November 229-510-110-210-310-410-5Today is last quiz (Adrian isgrading tonight! Will be postedon web as soon as available)Review of BuffersDiprotic Acids and Baseswill omit solubilityDiprotic BuffersPolyprotic Acids and Basesput up W13, W14 Week-in-ReviewPrinciple SpeciesFractional Composition (omit equations)
REVIEW FROM MONDAYPolyprotic Acids and Basespolyprotic acid – capable of donating more than one protonpolyprotic base – capable of accepting more than one protonEX 1. What is the concentration of all species present in a 1.00 M solution of sulfuric acidwhere Ka 1.2 10-2?H2SO4 strong acid [acid] [H ] [conjugate base] [H2SO4]o [H ] [HSO4 ] 1.00 M[OH-] Kw / [H ] 1.01 10-14HSO4 (aq) H2O(l) H3O (aq) SO42 (aq)I1.01.0 0C-x x xE1.0 – x1.0 xx2 [H3O ][SO4 ](1.00 x) xKa x [SO42 ] 0.012 M 1.00 - x[HSO4 ]100(0.012) 1.2% OK by 5% rule, not OK by 1% rule, quadratic x [SO42 ] 0.0117 M,[H ]total 1.00 0.0117 1.01 M, [OH-] 1.00 10-14 M
REVIEW FROM MONDAY
REVIEW FROM MONDAYPolyprotic Acids and BasesEX 2. What is the pH and concentration of all species present in a 5.00 M solution ofphosphoric acid?100(0.1939)/5.00 3.9%,Ka1 7.11 10 3O (aq)OK by 5%, not by 1% rulequadratic x 0.1901[H3O ] [H2PO4 ] 0.190,quadratic[OH ] 0.19015.3 10 13 M (aq)H3PO4(aq) H2O(l) H3 H2PO4EQ 5.00 – xxx[H3O ][H2PO4 ]x2 x [H3O ] [H2PO4 ] 0.1939 MKa1 [H3PO4 ]5.00 - x[H3PO4 ] 5.00 - 0.19 4.81, [OH ] 5.2 10 13 MpH 0.71Ka2 6.34 10 8Ka2H2PO4 (aq) H2O(l) H3O (aq) HPO42 (aq)[H3O ][HPO42 ] 3 6.23 10 [H2PO4 ]Ka3 [H3O ][PO43 ][H3O ][PO43 ] Ka2[HPO42 ] [PO43 ] 7.2 10 3 M
REVIEW FROM MONDAYPolyprotic Acids and Bases – Intermediate Formbaseacidquadratic 0.1901for NaHAexact relation
Polyprotic Acids and Bases – Intermediate Form [HA-] MHA- (FHA-)quadratic 0.1901this often needs to be checked[H ]2 [H ] (Ka1Ka2)½
Polyprotic Acids and Bases – Predominant SpeciespH pKa log10[B][A]quadratic 0.1901H3PO42.1487.19712.374
Fractional Composition Diagrams, α versus pHmonoprotic acid, HAdiprotic acid, H2A
Z Chapter 6 (Chemical Equilibrium)equilibrium constantlaw of mass actionactivity/activity coefficientK (molarity)KP (partial pressures)reaction quotient, Qmathematicsmultiply reaction by nreverse reactionadd reactionssubtract reactionssolving equilibrium problemshomogeneous/heterogeneous reactionsapproximation for small Kusing quadratic formulaLe Chatelier’s Principle, change oftemperaturetotal pressureconcentrations/partial pressures
Z Chapter 7.1 – 7.4, 7.6 (Strong Acids and Bases)Bronsted Lowrydefinition of acid/baseconjugate acid/conjugate baseautoionizationknow 7 common strong acidsknow soluble strong basesstrength of acids/basespH scaledepends upon water autoionizationtemperature dependencemeaning of neutrality, acidity, basicity
H Chapter 9 (Monoprotic Acid-Base Equilibria)systematic treatment of equilibriummass balancecharge balancewhy and when neededfor strong acids/basesfor weak acids/bases [K x2/(F - x)]acidity/basicity of salt solutionsstrong acids/basesconjugatesmeaning of neutrality, acidity, basicitybufferswhat are theyidentify themquantitative response to added H , OHpreparationmoles of acid/conjugatemolarities of acid/conjugatestrong acid basestrong base acidHenderson-Hasselbalchsetting up and using an ICE table
H Chapter 10 (Polyprotic Acid-Base Equilibria)polyprotic acids and baseswrite acid reactionsidentify amphoteric speciesintermediate formhow to determine pH from pH ½ (pKa1 pKa2)principle speciesbuffersfractional compositionnot for Exam III
Polyprotic Acids and Bases_ Ch 10-1 – 10-5. Third midterm exam on Monday, November 22. 9-5 Review of Buffers. 10-1 Diprotic Acids and Bases. 10-2 Diprotic Buffers . 10-3 Polyprotic Acids and Bases . 10-4 Principle Species. 10-5 Fractional Composition (omit equations) Today is last quiz (Adrian is grading tonight! Will be posted
2. Describe the common properties of acids and bases 3. Identify acids and bases using indicators, pH papers 4. Name some common lab acids and bases, acids at and bases at home 5. Describe reactions of acids with metals, bases and carbonates 6. Describe the application of acids, bases and p
properties of acids and bases. 5. Describe the colors that form in acidic and basic solutions with litmus paper and phenolphthalein. 6. Explain the difference between strong acids or bases and weak acids or bases. 7. Memorize the strong acids and bases. 8. Define the terms polyprotic and amphiprotic. 9. Perform calculations using the following .
_7. Which statement describes an alternate theory of acids and bases? (1) Acids and bases are both H acceptors. (2) Acids and bases are both H donors. (3) Acids are H acceptors, and bases are H donors. (4) Acids are H donors, and bases are H acceptors. _8. Which substance is the
Properties of Acids and Bases Return to the Table of contents Slide 5 / 208 What is an Acid? Acids release hydrogen ions into solutions Acids neutralize bases in a neutralization reaction. Acids corrode active metals. Acids turn blue litmus to red. Acids taste sour. Properties of Acids Slide 6 / 208 Properties
Acids, Bases, and pH The hydrohalic acids (HX (aq)), where X represents a halogen) include HF, HCl, HBr, and HI. Only HF is a weak acid. The rest are strong acids. What factors account for this difference? 8.1 Explaining the Properties of Acids and Bases 8.2 The Equilibrium of Weak Acids and Bases 8.3
Unit 12 Acids and Bases- Funsheets Part A: Name and write the formula for the following acids and bases. 1) Carbonic acid _ . Part E: Using your knowledge of acids and bases, answer the following questions. 1) Fill in the following Venn diagram about properties of acids and bases. You must fill in at least 4 facts in each.
Lecture Notes for Chapter 16: Acids and Bases I. Acids and Bases a. There are several ways to define acids and bases. Perhaps the easiest way to start is to list some of the properties of acids and bases. b. The table below summarizes some properties that will be helpful
Solutions: AMC Prep for ACHS: Counting and Probability ACHS Math Competition Team 5 Jan 2009. Problem 1 What is the probability that a randomly drawn positive factor of 60 is less than 7? Problem 1 What is the probability that a randomly drawn positive factor of 60 is less than 7? The factors of 60 are 1,2,3,4,5,6,10,12,15,20,30, and 60. Six of the twelve factors are less than 7, so the .
