Dicarboxylic acids have two dissociation constants, one for the initial dissociation into a rnonoanion and one for the second dissociation into a dianion . For oxalic acid, HO2C-CO.H, the first ionization constant has pKaj = 1.2 and the second ionization constant has pKaz = 4.2. Why is the second carboxyl group so much less acidic than the first?

Q: Consider the following reaction: X-SH X-S* + H+ The pKa for the sulfhydryl (thiol) group (SH) is…

A: The reaction of X-SH is given as,=> X-SH  ⇌  X-S-  +  H+

Q: Which compound below is the stronger acid in aqueous solution? W 5.0M H2SO3 or 0.020M H2SO4…

A: To find: Which is stronger acid in solution, 5.0 M H2SO3 or 0.020 M H2SO4?

Q: In a 0.01 M solution of 1,4-butanedicarboxylic acid, HOOCCH 2CH 2COOH ( K a1 = 2.9 × 10 –5, K a2…

A: Given that, We have a 0.01 (M) solution of 1,4-butanedicarboxylic acid which has the chemical…

Q: your structures fully satisfy the octet rule. H molecule 1 H H H molecule 2 H H-C conjugate acid of…

A: According to Bronsted acid- base theory a  conjugate acid–base pair consists of two substances that…

Q: Calculate the pH and fraction of dissociation (a) for each of the acetic acid (CH,COOH, pK, = 4.756)…

A: We have to calculate PH and fraction of dissociation for acetic acid having PKa = 4.756 A) 0.00149M…

Q: Which compound would have the least stable conjugate base and why

A: stability of conjugate base depends upon the stability of negative charge

Q: 3. For the following acid – base reaction, (a) predict the products; (b) identify the Bronsted acid,…

A: Bronsted acid -: species which gives a proton. Bronsted base :- species which accept a proton.

Q: Given that the Ka value for acetic acid is 1.8 × 10−5 and the Ka value for hypochlorousacid is 3.5 ×…

A: Given: Ka of acetic acid = 1.8 x 10-5 Ka of hypochlorous acid =3.5 x 10-8

Q: A 0.480 M solution is made with the compound shown below. I. What class of acid or base is this…

A: The objective of the question is to determine the followingUnder what class of acid or base is the…

Q: Many multi-step organic reaction mechanisms involve proton transfer steps. For example, the first…

A: The process by which carboxylic acids are converted to esters using alcohols and acids as catalyst…

Q: Which of the following two acids has the stronger conjugate base? Nitrous acid, Ka = 7.1 x 10–4…

A: The solution is provided below:

Q: Lowest base strength benzoate ion Ka = 6.46 x 10-5 acetate ion CH3COO K 1.76-105 carbonate ion co,…

A: According to Bronsted lowry theory greater is the value of Ka of any acid more is acidity of that…

Q: will hc2h2o4 (not its conjugate) act as an acid or base- pick one of these rationales: because the…

A: The objective of the question is to determine whether HC2H2O4 will act as an acid or a base, and to…

Q: What is the relationship between Ka of the acid and Kb of its conjugate base?

A:

Q: At what pH will 50% of a compound with a pKa = 7.4 be in its basic form? Express your answer using…

A:

Q: Which of the following compounds or ions has the strongest conjugate acid? K₁ (HCN) = 4.0 × 10−¹⁰,…

A: Higher the value of Ka, stronger is the acid.Those acid-base pairs which differ by a proton are…

Q: 4. Give the products from the following acid-base reactions and identify the acid and base on the…

A: To provide the product for the given acid base reaction and identify the conjugate base, conjugate…

Q: Classify each of the following compounds as an acid, base, or both. Be sure to answer all parts.…

A: For given molecules  Each are classified as acid base or neutral and explained briefly as follows

Q: What is the conjugate base of H₂O? О но H HCI H3O+

A:

Q: A carboxylic acid has a pKa of 6.00. Which of the following statements is true? O A. There is an…

A: pKa for a weak acid is related to pH and concentration as per Henderson Hasselbalch equation.

Q: € Draw the structure for the conjugate acid of the base shown. Be sure to include all lone pairs and…

A: Step 1:Step 2:

Q: The following compound is derived from one of the twenty mammaliam "amino acids". It is the ethyl…

A: Highly basic Nitrogen protonated. Guanidine  moiety  is highly basic  than secondary  amine so…

Q: For HNO2, Ka = 4.6 x 10-4 and for HSO4-, Ka = 1.2 x 10-2. Which is the stronger acid?

A:

Q: 1a. Predict the products of the following acid-base reactions, including formal charges. Label the…

A: Whether equilibrium lies on the right side or left side depends upon the acidity of the reactant and…

Q: Try to do this problem without consulting a table of acidity constants. Select the single best…

A: CH3-OH+ - CH3 is strong acid than protonated amine.  Answer- Option 2

Q: What is the conjugate base of H,PO, 1) H,O+ (aq) 2) H,PO, (aq) 3) HPO,2 (aq) 4) PO, (aq) 4. -3

A: What is conjugate base of H2PO4- ?

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.