Why?Homework Answers
Answer :
CH3COO- is strongest conjugate base.
Reason :
Weakest acid will have strongest conjugate base and strongest acid will have weakest conjugate base.
Ka is directely propotional to concentration of H+ , Which means higher the Ka value stronger the acid, lesser the Ka Value weakest acid.
In option Ka of CH3COOH is lesser than other acids, so CH3COOH is weakest acid and hence its conjugate base is the strongest one.
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Why?
K_a for acetic acid, CH_3COOH, is 1.80 times l0^-5. K_a for acetylsalicylic acid (aspirin), HC_9H_7O_4,...
H3PO4 OH + OH OH salicylic acid acetic anhydride acetic acid acetylsalicylic acid (aspirin) 1. Why...
H3PO4 OH + OH OH salicylic acid acetic anhydride acetic acid acetylsalicylic acid (aspirin) 1. Why is it better to perform acetylation with acetic anhydride rather than using a Fischer esterification with acetic acid? 2. Draw a complete arrow-pushing mechanism for the reaction. 3. When an old sample of aspirin is left in moist conditions, it will begin to smell like vinegar. Draw a reaction scheme and briefly explain what happened.
Acetic acid CH3COOH 1.8 × 10-5 Acetylsalicylic acid (aspirin) HC9H7O4 3.0 × 10-4 Equal volumes of...
Acetic acid
CH3COOH
1.8 × 10-5
Acetylsalicylic acid (aspirin)
HC9H7O4
3.0 × 10-4
Equal volumes of 0.506 M aqueous solutions of acetic acid (CH3COOH(aq)) and sodium acetylsalicylate (NaC,H-04) are mixed. (1) Write the net ionic equation for the overall reaction that takes place as the system comes to equilibrium. Write acetic acid, benzoic acid or formic acid and their conjugates in the form RCOOH/RCOO. For example, benzoic acid should be written "CH3COOH" NOT "CzH;CO,H". It is not necessary to include...
K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80...
K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80 x 10-4. K, for acetic acid, CH3COOH, is 1.80 x 10-5 What is the formula for the weakest acid? Drag and drop your selection from the following list to complete the answer: CH3COOH HF HCOOH
What is the ratio of acetate ion to acetic acid (K_a = 1.76 times 10^-5) in...
What is the ratio of acetate ion to acetic acid (K_a = 1.76 times 10^-5) in a buffer containing these compounds at pH 3.920?
What is the ratio of acetate ion to acetic acid (K_a = 1.76 times 10^-5) in...
What is the ratio of acetate ion to acetic acid (K_a = 1.76 times 10^-5) in a buffer containing these compounds at pH 3.470?
10) A student prepares aspirin (acetylsalicylic acid, C,H,0.) by reacting salicylic acid (C,H,O,) with acetic anhydride...
10) A student prepares aspirin (acetylsalicylic acid, C,H,0.) by reacting salicylic acid (C,H,O,) with acetic anhydride (C.H.O.). The balanced equation for the reaction is: 2 C,H,O, + C,H,O, + 2 C,H,O, + H,O The lab calls for 3.00 g of salicylic acid to be mixed with 6.40 g of acetic anhydride. What is the limiting reagent and what is the maximum amount of aspirin which can be prepared if the yield for the reaction is 91%?
If a buffer solution is 0.270 m in a weak acid (K_a = 7.6 times 10^-5)...
If a buffer solution is 0.270 m in a weak acid (K_a = 7.6 times 10^-5) and 0.520 m in its conjugate base, what is the pH?
Determination of the dissociation Constant (K_a) of a weak Acid. The pH of a 0.10 M...
Determination of the dissociation Constant (K_a) of a weak Acid. The pH of a 0.10 M solution of formic acid (HCOOH) is 2.39, what is the K_a of the acid? K_a = Hydrofluoric Acid, A weak Acid with K_a = 7.1 times 10^-4 A. For a 0.50 M solution of HF, calculate the equilibrium concentrations of HF, H^+ and F^-. [HF] = [H^+] = [F^-] = % Dissociation =, pH = B. Now consider a 0.050 M solution of HF....
Rank the following acids in strength (from weakest to strongest). A HC H302 В НОСІ CHCN...
Rank the following acids in strength (from weakest to strongest). A HC H302 В НОСІ CHCN DHCI weakest = < (Enter the letter corresponding to each acid.) K, for phenol (a weak acid), CH,OH is 1.00×10-10 K, for acetic acid, CH,COOH is 1.80x10-5 K, for acetylsalicylic acid (aspirin), HC,H,O4, is 3.00*10-4 What is the formula for the strongest conjugate base?
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are...
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are there in 1.0 grams of salicylic acid? 2. How many moles of acetic anhydride are there in 3 mL of acetic anhydride? 3. When 1.0g of salicylic acid and 3 mL of acetic anhydride react, DETERMINE which one is the limiting reactant (you can go to General Chemistry if you need help about limiting reagent)? 4. What is phosphoric acid used for in the...
H3PO4 OH + OH OH salicylic acid acetic anhydride acetic acid acetylsalicylic acid (aspirin) 1. Why is it better to perform acetylation with acetic anhydride rather than using a Fischer esterification with acetic acid? 2. Draw a complete arrow-pushing mechanism for the reaction. 3. When an old sample of aspirin is left in moist conditions, it will begin to smell like vinegar. Draw a reaction scheme and briefly explain what happened.
Acetic acid
CH3COOH
1.8 × 10-5
Acetylsalicylic acid (aspirin)
HC9H7O4
3.0 × 10-4
Equal volumes of 0.506 M aqueous solutions of acetic acid (CH3COOH(aq)) and sodium acetylsalicylate (NaC,H-04) are mixed. (1) Write the net ionic equation for the overall reaction that takes place as the system comes to equilibrium. Write acetic acid, benzoic acid or formic acid and their conjugates in the form RCOOH/RCOO. For example, benzoic acid should be written "CH3COOH" NOT "CzH;CO,H". It is not necessary to include...
K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80 x 10-4. K, for acetic acid, CH3COOH, is 1.80 x 10-5 What is the formula for the weakest acid? Drag and drop your selection from the following list to complete the answer: CH3COOH HF HCOOH
What is the ratio of acetate ion to acetic acid (K_a = 1.76 times 10^-5) in a buffer containing these compounds at pH 3.920?
What is the ratio of acetate ion to acetic acid (K_a = 1.76 times 10^-5) in a buffer containing these compounds at pH 3.470?
10) A student prepares aspirin (acetylsalicylic acid, C,H,0.) by reacting salicylic acid (C,H,O,) with acetic anhydride (C.H.O.). The balanced equation for the reaction is: 2 C,H,O, + C,H,O, + 2 C,H,O, + H,O The lab calls for 3.00 g of salicylic acid to be mixed with 6.40 g of acetic anhydride. What is the limiting reagent and what is the maximum amount of aspirin which can be prepared if the yield for the reaction is 91%?
If a buffer solution is 0.270 m in a weak acid (K_a = 7.6 times 10^-5) and 0.520 m in its conjugate base, what is the pH?
Determination of the dissociation Constant (K_a) of a weak Acid. The pH of a 0.10 M solution of formic acid (HCOOH) is 2.39, what is the K_a of the acid? K_a = Hydrofluoric Acid, A weak Acid with K_a = 7.1 times 10^-4 A. For a 0.50 M solution of HF, calculate the equilibrium concentrations of HF, H^+ and F^-. [HF] = [H^+] = [F^-] = % Dissociation =, pH = B. Now consider a 0.050 M solution of HF....
Rank the following acids in strength (from weakest to strongest). A HC H302 В НОСІ CHCN DHCI weakest = < (Enter the letter corresponding to each acid.) K, for phenol (a weak acid), CH,OH is 1.00×10-10 K, for acetic acid, CH,COOH is 1.80x10-5 K, for acetylsalicylic acid (aspirin), HC,H,O4, is 3.00*10-4 What is the formula for the strongest conjugate base?
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