Conjugate bases Study guides, Class notes & Summaries
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Acid and Bases + Buffer Final Exam Correctly Answered 2024.
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Acid and Bases + Buffer Final Exam Correctly Answered 2024. 
 
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 (vinega...
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Biochemistry || Questions and 100% Verified Answers.
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Hydrophobic interactions make important energetic contributions to : 
a. binding of a hormone to its receptor protein 
b. enzyme-substrate interactions 
c. membrane structure 
d. three-dimensional folding of a polypeptide chain 
e. all of the above are true 
f. None of them correct answers E 
 
Which of the following is true about the properties of aqueous solutions? 
a. A pH change from 5.0 to 6.0 reflects an increase in the hydroxide ion concentration ([OH-]) of 20% 
b. A pH change from 6.0 to...
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Chem 104 Exam Questions And Answers
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Chem 104 Exam Questions And Answers 
Consider the following questions about polyprotic acids and determine if each statement is true or false. - ANS false: For most polyprotic acids, each proton dissociation can not be looked at separately 
true: For most polyprotic acids Ka1 largely determines the pH of the solution 
false: for polyprotic acids Ka1 is typically much smaller than Ka2 
 
Which of the following statements about the acid/base properties of salts are true? Which are false? - ...
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Chem 219 Unit 5 Exam Questions With 100% Correct Answers
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Chem 219 Unit 5 Exam Questions With 
100% Correct Answers 
Generic formula for alcohols - answerR-OH 
phenol - answerhydroxy-substituted aromatic molecules (any compound with an -OH 
attached to a benzene ring) 
IUPAC system rules for naming organic alcohols - answer- organic alcohols are named by 
replacing the suffix of the parent chain of the molecule with the suffix -ol 
- The parent chain is numbered so as to give the hydroxyl group the lowest possible number. 
(examples: 1-propanol, and cy...
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CHEM 210 Exam 3 Correct 100%
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Acid - ANSWERa substance that has H+ in its formula and dissociates in water to yield H3O+ 
-some strong acids are HCl, HI, CHlO4, HBr, H2SO4 and HNO3 
-loses proton; forms conjugate base (OH- , hydroxide ion) 
 
Base - ANSWERa substance that has OH in its formula and dissociates in water to yield OH- 
-strong bases include NaOH, KOH, and Ba(OH)2 
-a strong base will have OH in its formula 
-gains proton; forms conjugate acid (H3O+ , hydronium ion) 
 
Salt and water are the products in reactions...
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BACE Practical Review Questions and Answers with complete solution
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Restriction Enzyme (Restriction Endonuclease) - Answer-An enzyme produced chiefly by certain 
bacteria, having the property of cleaving/cutting/digesting DNA molecules at or near a specific 
sequence of bases. 
Spectrophotometer - Answer-Used to measure protein or DNA concentration; an apparatus for 
measuring the intensity of light in a part of the spectrum, especially as transmitted or emitted by 
particular substances. 
Horizontal Gel Electrophoresis Box - Answer-Used to run DNA agarose gels....
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CHEMISTRY PRAXIS Practice Exam Questions And Answers (Updated And Verified)
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CHEMISTRY PRAXIS Practice Exam 
Questions And Answers (Updated And 
Verified) 
What is the negative log of 1 X10⁻⁷ - answer7 
When [H₃O⁺] = [OH⁻] the solution is acidic or basic or neutral - answerneutral 
The concentration of H₃O⁺ and OH⁻ in pure water at 25°C - answer1X10⁻⁷ 
Kw - answer1X10⁻¹⁴ 
pH + pOH = - answer14 
What is the concentration of Hydrogen ion when the pH is 2 - answer1X10⁻² 
Using the - log [H⁺] or - log [H₃O⁺] helps you find the - answerpH 
U...
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Chem 210 Exam 3 questions and answers
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what factors explain the outcomes of reactions? 
hybridization, delocalization, eN, atom density 
 
 
 
what is a leaving group? 
- group of atom(s) that can be stable on its own 
- eN atoms that are good LG also make strong acids 
 
 
 
what is the α carbon? 
C directly attached to leaving group 
 
 
 
what are β Cs? β Hs? 
βC: C(s) attached to α carbon 
βH: H(s) attached to βC 
 
 
 
what is a LB? is it a nucleophile or electrophile? 
lewis base, nucleophile 
 
 
 
what is nucleophilic ...
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CHEM 120 Final Exam| 171 Questions| With Complete Solutions
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How many bonds can nitrogen have? Which rule or principle should be used? 
 
A) Five bonds; octet rule. 
B) Three bonds; octet rule. 
C) Three bonds; the Hund's rule. 
D) Five bonds; the Aufbau Principle. correct answer: B 
 
When two hydrogen atoms meet, they will attract to each other and form a bond (and a H2 molecule). Why? 
 
A) Because electrons like to stay together. 
B) Because electrons like to be paired up. 
C) Because there is attraction between the electron in one hydrogen atom an...
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Chem 104 Final Exam
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Acid - CORRECT ANSWER-proton donor 
base - CORRECT ANSWER-proton acceptor 
conjugate base - CORRECT ANSWER-what is left after an acid gives up a 
proton 
Strong acids - CORRECT ANSWER-HCl, HBr, H2SO4, HI, HNO3, HClO4 
strong base - CORRECT ANSWER-group 1 hydroxide (NaOH, KOH, Ca(OH)2) 
strong acids have - CORRECT ANSWER-weaker conjugate base 
weaker acids have - CORRECT ANSWER-stronger conjugate bases 
weaker bases - CORRECT ANSWER-resonance, more electronegative groups 
buffer - CORRECT ANSWER-...