cannot figure out how to do these problems.
Posted: Fri Jul 15, 2022 4:41 pm
cannot figure out how to do these problems.
ving pka to Frcdict Reatstion Dircection o seterinine whether reactants of gृeducts ate fasoed in an acid hase reseion, follow these 1. Derermine the milcule that will act as the acid on both sides of the equation. 2. Lneale most acidic prown and look sp the pK K4 for each acid uaing a takle. 3. The rcaction will favor the side of the scaction where the molecule with the highest pkK+ is protonated 9p +020+4 - Hor the scacrion alsose. which two congeunds ane the acids? values are simalar for funcional govepo in sfflerent molecules. y koutramig dus favioned tonitani). Prolicitied K for this raction. k2= concerafration of reactants mncencratien of grodaces == - Phalka the fquilír rimen wo atant for the reacthe:
Prestice frectictima.Mrastien Dissition - reactant ipkiz lager on Wif? \$1. products ipica larger werichi) o mistare offewtaits and grodocts qumilar uise poisl th cotθ∘ H−4 =2 +H4a a.
Heactioc Predisting Mrastion Direstien Flative energy of the saetang materahe and prodsets - Thim a racticn frocle diagnn for ech of the racticas on the gowwes pags
Duvid V Flores: Nowember 5,2010 et 12:i8am Tm working on a transketion from Spanish to English about isoelectric points of armino oelids. I'm not a chernist nor wannabe but need to understand this in
Using pKa to Predict Reaction Direction To determine whether reactants or products are favored in an acid base reaction, follow these steps. 1. Determine the molecule that will act as the acid on both sides of the equation. 2. Locate most acidic proton and look up the pKa for each acid using a table. 3. The reaction will favor the side of the reaction where the molecule with the highest pK3 is protonated. A B C D EXAMPLE: - For the reaction above, which two compounds are the acids? A &D values are similar for functional groups in different molecules. A=20−24D=4 - Is the pKa larger for the acid on the left or right side of the reaction? Are products or reactants favored? pla |drogh on the leff of reactrior valtants ave favorea - Remember, each pK unit is approximately a factor of 10 for the K (equilibrium constant). Predict the K for this reaction. K= concentration of reactants concentration of products =− - Predict the equilibrium constant for this reaction: would be large (>1). o would be small (<1). would be about 1.
Practice Predicting Reaction Direction - Draw the curved arrow mechanism for each base reacting with a protic (Bronsted) acid. - Predict the products of these acid-base reactions at equilibrium. - Use a pKil Table to predict whether the reaction will favor reactants ( pKa larger on left) products (pka larger on right) mixture of reactants and products (similar size pKa) a. b. CH3O⊖H=H c. NH2⊖ d. e.
Practice Predicting Reaction Direction A reaction profile diagram (aka energy diagram or reaction coordinate diagram) shows the relative energy of the starting materials and products. - Draw a reaction profile diagram for each of the reactions on the previous page.
Hydronium ion −1.7 H2O¨ : Sulfonic acids Malonates 13H3COΘ∗∗H∗OCH3 9−1113:NH3CH3∗: Water 14 Alcohol 17H3C−0 Ketone/ aldehyde 20−24 Nitrile
Ester Alkyne Sulfoxide Amine Hydrogen H2N¨−H∼35:NH2⊖ Alkene 36 H⊖ Alkane ∼50
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Prestice frectictima.Mrastien Dissition - reactant ipkiz lager on Wif? \$1. products ipica larger werichi) o mistare offewtaits and grodocts qumilar uise poisl th cotθ∘ H−4 =2 +H4a a.
Heactioc Predisting Mrastion Direstien Flative energy of the saetang materahe and prodsets - Thim a racticn frocle diagnn for ech of the racticas on the gowwes pags
Duvid V Flores: Nowember 5,2010 et 12:i8am Tm working on a transketion from Spanish to English about isoelectric points of armino oelids. I'm not a chernist nor wannabe but need to understand this in
Using pKa to Predict Reaction Direction To determine whether reactants or products are favored in an acid base reaction, follow these steps. 1. Determine the molecule that will act as the acid on both sides of the equation. 2. Locate most acidic proton and look up the pKa for each acid using a table. 3. The reaction will favor the side of the reaction where the molecule with the highest pK3 is protonated. A B C D EXAMPLE: - For the reaction above, which two compounds are the acids? A &D values are similar for functional groups in different molecules. A=20−24D=4 - Is the pKa larger for the acid on the left or right side of the reaction? Are products or reactants favored? pla |drogh on the leff of reactrior valtants ave favorea - Remember, each pK unit is approximately a factor of 10 for the K (equilibrium constant). Predict the K for this reaction. K= concentration of reactants concentration of products =− - Predict the equilibrium constant for this reaction: would be large (>1). o would be small (<1). would be about 1.
Practice Predicting Reaction Direction - Draw the curved arrow mechanism for each base reacting with a protic (Bronsted) acid. - Predict the products of these acid-base reactions at equilibrium. - Use a pKil Table to predict whether the reaction will favor reactants ( pKa larger on left) products (pka larger on right) mixture of reactants and products (similar size pKa) a. b. CH3O⊖H=H c. NH2⊖ d. e.
Practice Predicting Reaction Direction A reaction profile diagram (aka energy diagram or reaction coordinate diagram) shows the relative energy of the starting materials and products. - Draw a reaction profile diagram for each of the reactions on the previous page.
Hydronium ion −1.7 H2O¨ : Sulfonic acids Malonates 13H3COΘ∗∗H∗OCH3 9−1113:NH3CH3∗: Water 14 Alcohol 17H3C−0 Ketone/ aldehyde 20−24 Nitrile
Ester Alkyne Sulfoxide Amine Hydrogen H2N¨−H∼35:NH2⊖ Alkene 36 H⊖ Alkane ∼50