Question

Органическое вещество Zсодержит 57,14% углерода, 4,76% водорода и кислород. Известно, что при его взаимодействии с водным раствором гидроксида кальция образуется вещество состава С6Н204Са. На основании данных в задаче: I) проведите необходимые вычисления (указывайте единицы измерения искомых физических величин) и установите молекулярную формулу органического вещества Z 2) составьте структурную формулу вещества 2., которая однозначно отражает порядок связи атомов в его молекуле; 3) напишите уравнение реакции вещества Z с раствором гидроксида кальция, используя структурную формулу вещества

Answer 1

Ответ:

1) Находим молекулярную формулу органического

вещества

Общая формула – CxHyOz

x : y : z = 45,28 / 12 : 9,43 / 1 : 45,28 / 16 =

= 3,77 : 9,43 : 2,83 = 4 : 10 : 3

Молекулярная формула – C4H10O3

Answer 2

Пусть формула вещества А CxHyNzStOh

Пусть масса вещества А равна 100 г m(А) = 100 г, тогда:

m(C) = 9,3 г, n(C) = 0,775 моль

m(N) = 10,85 г, n(N) = 0,775 моль

m(S) = 24,8 г, n(S) = 0,775 моль

m(O) = 49,6 г, n(O) = 3,1 моль

m(H) = 5,43 г, n(H) = 5,43 моль

Получаем выражение:

х:y:z:t:h = 0,775:5,43:0,775:0,775:3,1 или

х:y:z:t:h = 1:7:1:1:4

или CH7NSO4

Данной формуле и условию задачи соответствует гидросульфат метиламмония:

[CH3-NH3]HSO4

Вещество В — нитрометан

Реакция получения вещества А из вещества В:

CH3-NO2 + 3Zn + 4H2SO4 → [CH3-NH3]HSO4 + 3ZnSO4 + 2H2O

Ответ: [CH3-NH3]HSO4

Answer 3

Organic compound Z

The organic compound Z contains 57.14% carbon, 4.76% hydrogen, and oxygen. When it reacts with an aqueous solution of calcium hydroxide, a substance with the composition C6H204Ca is formed. Based on the given data, we need to perform the following calculations, determine the molecular formula of organic compound Z, create the structural formula of substance 2, and write the reaction equation of substance Z with calcium hydroxide solution using the structural formula of substance 2.

To determine the molecular formula of organic compound Z, we can start by assuming a 100g sample of the compound. This means that the sample contains 57.14g of carbon, 4.76g of hydrogen, and oxygen. To find the number of moles of each element, we can use their respective molar masses:

- Carbon (C): 12.01 g/mol - Hydrogen (H): 1.01 g/mol - Oxygen (O): 16.00 g/mol

Using these molar masses, we can calculate the number of moles of each element in the sample:

- Moles of carbon: 57.14g / 12.01 g/mol = 4.76 mol - Moles of hydrogen: 4.76g / 1.01 g/mol = 4.72 mol - Moles of oxygen: (100g - 57.14g - 4.76g) / 16.00 g/mol = 2.81 mol

To find the simplest whole number ratio of the elements, we can divide each number of moles by the smallest number of moles (2.81 mol):

- Carbon: 4.76 mol / 2.81 mol ≈ 1.69 - Hydrogen: 4.72 mol / 2.81 mol ≈ 1.68 - Oxygen: 2.81 mol / 2.81 mol = 1.00

Since we need to find a whole number ratio, we can multiply each ratio by 2 to get:

- Carbon: 1.69 * 2 ≈ 3.38 ≈ 3 - Hydrogen: 1.68 * 2 ≈ 3.36 ≈ 3 - Oxygen: 1.00 * 2 = 2

Therefore, the empirical formula of organic compound Z is C3H3O2.

To determine the molecular formula, we need to know the molar mass of the compound. Unfortunately, the molar mass is not provided in the given information. Without the molar mass, we cannot determine the molecular formula with certainty. However, we can provide the empirical formula, which represents the simplest whole number ratio of atoms in the compound.

Structural formula of substance 2

The structural formula of substance 2, which reflects the order of atom bonds in its molecule, cannot be determined without additional information. The given information does not provide any details about the structure of substance 2 or the specific arrangement of atoms in its molecule.

Reaction equation of substance Z with calcium hydroxide solution

To write the reaction equation of substance Z with calcium hydroxide solution, we need the structural formula of substance Z. Unfortunately, the structural formula of substance Z is not provided in the given information. Without the structural formula, we cannot write the reaction equation with certainty.

In summary, based on the given information, we can determine the empirical formula of organic compound Z as C3H3O2. However, we cannot determine the molecular formula or the structural formula of substance 2 without additional information. Similarly, we cannot write the reaction equation of substance Z with calcium hydroxide solution without the structural formula of substance Z.