Question

30 БАЛОВ ПОМОГИТЕ))))) Определите объем раствора этанола с массовой долей спирта 96% (плотность 0.80 г \ мл) использованного для этерификации 2 моль аминоуксусной кислоты

Answer 1

Смотри на листочке---------

Answer 2

Calculation of the Volume of Ethanol Solution Used for Esterification

To determine the volume of the ethanol solution used for the esterification of 2 moles of aminoxycetic acid, we need to consider the mass fraction of alcohol in the solution and the density of the solution.

Given: - Mass fraction of alcohol (ethanol) in the solution: 96% - Density of the solution: 0.80 g/mL - Number of moles of aminoxycetic acid: 2

To calculate the volume of the ethanol solution, we can use the following steps:

1. Calculate the molar mass of ethanol (C2H5OH): - Carbon (C) has a molar mass of 12.01 g/mol - Hydrogen (H) has a molar mass of 1.01 g/mol - Oxygen (O) has a molar mass of 16.00 g/mol - The molar mass of ethanol (C2H5OH) is (2 * 12.01) + (6 * 1.01) + 16.00 = 46.07 g/mol.

2. Calculate the mass of ethanol required for the esterification: - Since the molar ratio between ethanol and aminoxycetic acid is 1:1, we need 2 moles of ethanol. - The mass of ethanol required is 2 moles * 46.07 g/mol = 92.14 g.

3. Calculate the volume of the ethanol solution: - The density of the ethanol solution is given as 0.80 g/mL. - Using the formula: volume = mass / density, we can calculate the volume of the ethanol solution: volume = 92.14 g / 0.80 g/mL = 115.18 mL.

Therefore, the volume of the ethanol solution used for the esterification of 2 moles of aminoxycetic acid is approximately 115.18 mL.