Homework Answers
The Bronsted acid-base reaction is given.
The two bases present in the equilibrium system are acetonitrile anion (-CH2CN) and hydroxide (OH-). The stronger base is hydroxide (OH-).
The conjugate acid of acetonitrile anion is acetonitrile (CH3CN) and the conjugate acid of hydroxide is water (HOH).
The direction of the equilibrium reaction can be predicted by comparing the pKa values of the conjugate acids. An acid-base reaction proceeds in the direction of the weaker acid, i.e, the equilibrium favors the side containing a weaker acid. This is due to the fact that a weaker acid is lower in energy (more stable) than a stronger acid and equilibrium always favors the more stable molecules or compounds.
The pKa values are
HOH = 14.0
CH3CN = 25.0
The pKa of an acid is defined as
pKa = -log Ka
The higher the pKa , the lower is the Ka and consequently, weaker is the acid. Therefore, a lower value of pKa denotes a stronger acid. Thus, HOH, having a lower pKa than CH3CN, is a stronger acid. Thus, a stronger acid reacts with a base to produce a weaker acid. Consequently, the reaction is product-favored, i.e, the equilibrium favors the products and the reaction proceeds to the right. Therefore, the products predominate at equilibrium.
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Answer questions a-c about the Bronsted acid-base reaction below using-the identifying letters A-D below each structure....
Answer questions a-c about the Bronsted acid-base reaction below using-the identifying letters A-D below each structure. A table of pk, values for various organic and inorganic acids can be found in the references section. H2 CH hydroxide nitroethane water nitroethane anion a) The weaker acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, eg AC. ? Retry Entire Group more group attempts remaining Submit Answer
1. 2. 3. Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters...
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2.
3.
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: benzene (pK. 43), and ammonia (pKa -36). -D ids of ines are benzene iok i NH2 NH3+ amide benzene ammonia bzene anion a) The stronger acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, e.g. ac)
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each...
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pka's for the acids of interest are: phenol (pK-9.9), and anilinium ion (PK, -4.6). NH2 on o-oo anilinium phenoxide aniline phenol a) The stronger acid is b) Its conjugate base is c) The species that predominate at equilibrium are two letters, e.g. ae) Submit Answer Retry Entire Group 4 more group attempts remaining
Homework Question Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D...
Homework Question
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: cyclohexanone (pK_a = 16.7), and ethylamnionium ion (pK_a = 10.8). The stronger base is Its conjugate acid is The species that predominate at equilibrium are (two letters, e g. ac)
- [Review Topics Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters...
- [Review Topics Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: acetone (pK, -19.3), and ethylammonium ion (pK. -10.8) ah ah ah ah А оның 4 сні ethylamine acetone ethylammonium acetone enolate a) The stronger base is b) Its conjugate acid is c) The species that predominate at equilibrium are two letters, e.g. ac) Submit Answer Retry Entire Gr Not started
[Review Topics) (References) Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters...
[Review Topics) (References) Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pka's for the acids of interest are: ammonia (pK, -36), and acetone (pK, -19.3). "NH₂ som hon — + CHI CH NH3 + CH, ODS amide acetone ammonia acetone enolate OUTL a) The stronger base is b) Its conjugate acid is c) The species that predominate at equilibrium are two letters, e.g. ac) 2re Submit Answer Retry Entire Group...
[Review Topics Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D...
[Review Topics Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. A table of pk, values for various organic and inorganic acids can be found in the references section CH, H-CN hydrogen cyanide CH ethoxide cyanide ethanol a) The weaker base is b) Its conjugate acid is c) The species that predominate at equilibrium are two letters, eg. AC Submit Answer Retry Entire Group 9 more group attempts remaining
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each...
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. A table of pka values for various organic and inorganic acids can be found in the references section. CH CHj CH2 acetone enolate hydrogen cyanide acetone cyanide a) The weaker base is b) Its conjugate acid is e) The species that predominate at equilibrium are (two letters, e.g. AC
For the Bronsted acid? base reaction shown below, determine the conjugate acid? base pairs. Then give...
For the Bronsted acid? base reaction shown below, determine the conjugate acid? base pairs. Then give the curved-arrow notation for the reaction in the left-to-right direction. (To draw the arrows, click on Fill in the blanks with the letters A,B,C, and D, representing the species in the reaction above. (It doesn?t matter which pair you list first.) acid and its conjugate base acid and its conjugate base
Use the References to access important values if needed for this question. For the reaction below:...
Use the References to access important values if needed for this question. For the reaction below: CHA + Fz CH;-F + H-F a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the...
Answer questions a-c about the Bronsted acid-base reaction below using-the identifying letters A-D below each structure. A table of pk, values for various organic and inorganic acids can be found in the references section. H2 CH hydroxide nitroethane water nitroethane anion a) The weaker acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, eg AC. ? Retry Entire Group more group attempts remaining Submit Answer
1.
2.
3.
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: benzene (pK. 43), and ammonia (pKa -36). -D ids of ines are benzene iok i NH2 NH3+ amide benzene ammonia bzene anion a) The stronger acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, e.g. ac)
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pka's for the acids of interest are: phenol (pK-9.9), and anilinium ion (PK, -4.6). NH2 on o-oo anilinium phenoxide aniline phenol a) The stronger acid is b) Its conjugate base is c) The species that predominate at equilibrium are two letters, e.g. ae) Submit Answer Retry Entire Group 4 more group attempts remaining
Homework Question
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: cyclohexanone (pK_a = 16.7), and ethylamnionium ion (pK_a = 10.8). The stronger base is Its conjugate acid is The species that predominate at equilibrium are (two letters, e g. ac)
- [Review Topics Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: acetone (pK, -19.3), and ethylammonium ion (pK. -10.8) ah ah ah ah А оның 4 сні ethylamine acetone ethylammonium acetone enolate a) The stronger base is b) Its conjugate acid is c) The species that predominate at equilibrium are two letters, e.g. ac) Submit Answer Retry Entire Gr Not started
[Review Topics) (References) Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pka's for the acids of interest are: ammonia (pK, -36), and acetone (pK, -19.3). "NH₂ som hon — + CHI CH NH3 + CH, ODS amide acetone ammonia acetone enolate OUTL a) The stronger base is b) Its conjugate acid is c) The species that predominate at equilibrium are two letters, e.g. ac) 2re Submit Answer Retry Entire Group...
[Review Topics Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. A table of pk, values for various organic and inorganic acids can be found in the references section CH, H-CN hydrogen cyanide CH ethoxide cyanide ethanol a) The weaker base is b) Its conjugate acid is c) The species that predominate at equilibrium are two letters, eg. AC Submit Answer Retry Entire Group 9 more group attempts remaining
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. A table of pka values for various organic and inorganic acids can be found in the references section. CH CHj CH2 acetone enolate hydrogen cyanide acetone cyanide a) The weaker base is b) Its conjugate acid is e) The species that predominate at equilibrium are (two letters, e.g. AC
For the Bronsted acid? base reaction shown below, determine the conjugate acid? base pairs. Then give the curved-arrow notation for the reaction in the left-to-right direction. (To draw the arrows, click on Fill in the blanks with the letters A,B,C, and D, representing the species in the reaction above. (It doesn?t matter which pair you list first.) acid and its conjugate base acid and its conjugate base
Use the References to access important values if needed for this question. For the reaction below: CHA + Fz CH;-F + H-F a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the...
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