What are the Ka values of maleic acid?
E5: Acid Dissociation Constants of Organics
| Compound | Conjugate Acid | Ka |
|---|---|---|
| maleic acid | 9.1×10–3 9.1×10–3 | |
| malic acid | 9.1×10–3 9.1×10–3 | |
| malonic acid | HOOCCH2COOH | 9.1×10–3 9.1×10–3 |
| methionine (μ = 0.1 M) | 9.1×10–3 9.1×10–3 |
What is the pKa value of malonic acid?
2.85
Properties
| Property | Value | Source |
|---|---|---|
| melting point (°C) | 135 dec °C | PhysProp |
| water solubility | 7.63E+005 mg/L (at 25 °C) | YALKOWSKY,SH & DANNENFELSER,RM (1992) |
| logP | -0.81 | HANSCH,C ET AL. (1995) |
| pKa | 2.85 (at 25 °C) | KORTUM,G ET AL (1961) |
What is the structural formula of malonic acid?
C3H4O4Malonic acid / Formula
What is the ka1 of maleic acid?
Malic acid is a diprotic acid, whose pKa at 25°C are 3.40 and 5.11 (Lide, 2005).
Why is Ka2 smaller than Ka1?
This is because the negatively charged HSO4- ion has much less tendency to donate a proton to H2O as compared to neutral H2SO4.
What type of compound is malonic acid?
dicarboxylic acid
Malonic acid is a dicarboxylic acid with a chemical formula C3H4O4. Dicarboxylic acids are organic compounds containing two carboxylic acid functional groups.
Is adipic acid a strong or weak acid?
Strong acid and bases – Weak acid and bases – Dissociation constants and pK’s
| Compound | ka | pka |
|---|---|---|
| Adipic acid (CH2)4(COOH)2 | 3.71 x 10-5 Step 1 3.87 x 10-5 Step 2 | 4.43 4.41 |
| Benzoic acid (C6H5COOH) | 6.46 x 10-5 | 4.19 |
| Carbonic acid (H2CO3) | 4.3 x 10-7 5.61 x 10-11 | 6.37 10.25 |
| Chloroacetic acid (ClCH2CO2H) | 1.4 x 10-3 | 2.85 |
What are the two PKAS of maleic acid?
Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups. Its chemical formula is HO2CCH=CHCO2H….Maleic acid.
| Names | |
|---|---|
| SMILES O=C(O)\C=C/C(=O)O | |
| Properties | |
| Chemical formula | C4H4O4 |
| Molar mass | 116.072 g·mol−1 |
What is the standard state of malonic acid in KPA?
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Malonic acid ( IUPAC systematic name: propanedioic acid) is a dicarboxylic acid with structure CH 2 (COOH) 2.
Is malonic acid the same as propanedioic acid?
Not to be confused with malic acid or maleic acid. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Malonic acid ( IUPAC systematic name: propanedioic acid) is a dicarboxylic acid with structure CH 2 (COOH) 2.
What is the ionic formula for malonic acid?
Malonic acid is diprotic; that is, it can donate two protons per molecule. Its first is 2.8 and the second is 5.7. Thus the malonate ion can be H O O C CH2COO− or C H 2(C O O)2− 2.
What is the difference between Ka1 and KA2?
Ka1 refers to this equation: H2CO3 H+ + HCO3- The Ka1 expression would be Ka1 = [H+] [HCO3-]/ [H2CO3] Ka2 refers to this equation: HCO3- H+ + CO3-2 The Ka2 expression would be Ka2 = [H+] [CO3-2]/ [HCO3-]