Question

Срочно!!!!!РЕШИТЕ ХИМИЮ Раствор алкадиена в н-гексане, в котором массовая доля алкадиена составляла 20,0%, подвергли гидрированию в присутствии никеле¬вого катализатора. После завершения гидрирования массовая доля образовавшегося алкана в полученной смеси составила 20,7730%. Определите формулу

Answer 1

Ответ:

сорян, я не знаю потому что химия полная дичб которая никому не нужна

Answer 2

Calculation of the Formula of the Alkane

To determine the formula of the alkane formed after the hydrogenation of the alkadiene, we can use the concept of mass percent composition.

The mass percent composition is the mass of a particular element in a compound divided by the total mass of the compound, multiplied by 100%. In this case, we know the mass percent composition of the alkane formed after hydrogenation is 20.7730%.

Let's assume the alkane has the general formula CxHy. To find the values of x and y, we need to calculate the mass percent composition of carbon (C) and hydrogen (H) in the alkane.

1. Calculate the mass percent composition of carbon (C): - The molar mass of carbon (C) is 12.01 g/mol. - The molar mass of hydrogen (H) is 1.008 g/mol. - Since the alkane is composed only of carbon and hydrogen, the mass percent composition of carbon can be calculated using the following equation: Mass percent composition of carbon = (mass of carbon / total mass of alkane) * 100%

2. Calculate the mass percent composition of hydrogen (H): - The mass percent composition of hydrogen can be calculated using the following equation: Mass percent composition of hydrogen = (mass of hydrogen / total mass of alkane) * 100%

3. Use the mass percent composition values to determine the empirical formula of the alkane: - The empirical formula represents the simplest whole-number ratio of atoms in a compound. To determine the empirical formula, divide the subscripts of the elements by their greatest common divisor.

Let's perform the calculations using the given data:

- Mass percent composition of alkane after hydrogenation: 20.7730% - Mass percent composition of alkadiene before hydrogenation: 20.0%

Based on the given information, we can calculate the mass percent composition of carbon and hydrogen in the alkane.

Calculation Steps:

1. Calculate the mass percent composition of carbon (C): - Mass percent composition of carbon = (mass of carbon / total mass of alkane) * 100% - Mass percent composition of carbon = (mass of carbon / total mass of alkane) * 100% = (20.7730% * total mass of alkane) / 100%

2. Calculate the mass percent composition of hydrogen (H): - Mass percent composition of hydrogen = (mass of hydrogen / total mass of alkane) * 100% - Mass percent composition of hydrogen = (mass of hydrogen / total mass of alkane) * 100% = (100% - mass percent composition of carbon)

3. Determine the empirical formula of the alkane: - Divide the subscripts of carbon and hydrogen by their greatest common divisor to obtain the simplest whole-number ratio.

Please note that the exact values of the masses and the empirical formula of the alkane cannot be determined without knowing the total mass of the alkane formed after hydrogenation.