Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fa
ID: 866144 • Letter: M
Question
Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fabrics and as a preservative of oils and fats.
The molecular formula for maleic acid is C4H4O4.
When 0.609 g of maleic acid is dissolved in 25.00 gof glacial acetic acid, the freezing point drops by 0.82 ?C. Maleic acid does not ionize in glacial acetic acid, which has a freezing-point depression constant of Kf=3.90 ?C/m.
In a titration experiment, a 0.4250-g sample of maleic acid is dissolved in water and requires 34.03 mL of 0.2152 M KOH for its complete neutralization.
The pH of 0.215 g of maleic acid in 50.00 mL of aqueous solution is found to be 1.80.
PART B Given that the ionizable H
atoms are associated with carboxyl groups, draw a plausible structure for maleic acid.
Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fabrics and as a preservative of oils and fats. The molecular formula for maleic acid is C4H4O4. When 0.609 g of maleic acid is dissolved in 25.00 gof glacial acetic acid, the freezing point drops by 0.82 ?C. Maleic acid does not ionize in glacial acetic acid, which has a freezing-point depression constant of Kf=3.90 ?C/m. In a titration experiment, a 0.4250-g sample of maleic acid is dissolved in water and requires 34.03 mL of 0.2152 M KOH for its complete neutralization. The pH of 0.215 g of maleic acid in 50.00 mL of aqueous solution is found to be 1.80. PART B Given that the ionizable H atoms are associated with carboxyl groups, draw a plausible structure for maleic acid.Explanation / Answer
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 HO2CCHCHCO2H. A four carbon molecule consisting of two carboxylic acid groups bonded to the opposite ends of a carbon-carbon double bond, in a cis configuration.
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