Question

Помогите плиз дам 10 балов в реакцию с хлором вступило 20гр водорода, найти объем водорода и массу образовавшегося вещества

Answer 1

20 г Х г
Cl2. + H2. -> 2HCl
n=1 моль n=2 моль
М=2 г/моль М=36 г/моль
m=2 г m=72 г

20 г Н2. - Х г. HCl
2 г Н2. - 72 г HCl
m(HCl) = 20 * 72 / 2 = 720 г

n(H2) = m / M = 20 / 2 =10 моль
V(H2)=Vm * n = 22,4 * 10 = 224 л

Answer 2

Reaction Details

To find the volume of hydrogen and the mass of the resulting substance when 10 moles of chlorine react with 20 grams of hydrogen, we can use the balanced chemical equation for the reaction between hydrogen and chlorine. The balanced chemical equation for the reaction is:

H2 + Cl2 → 2HCl

Calculating the Volume of Hydrogen

To find the volume of hydrogen, we can use the ideal gas law equation, which is given by:

PV = nRT

Where: - P = pressure - V = volume - n = number of moles - R = ideal gas constant - T = temperature

Given that the reaction takes place at standard temperature and pressure (STP), which is 0°C and 1 atm, we can use the molar volume of a gas at STP, which is 22.4 L/mol. Using this information, we can calculate the volume of hydrogen.

The number of moles of hydrogen is given as 20 grams. We can convert this to moles using the molar mass of hydrogen, which is 1 g/mol. Therefore, the number of moles of hydrogen is 20 grams / 1 g/mol = 20 moles.

Using the molar volume of a gas at STP, the volume of hydrogen can be calculated as: Volume = 20 moles * 22.4 L/mol = 448 L

Calculating the Mass of the Resulting Substance

The molar ratio of hydrogen to hydrogen chloride in the balanced chemical equation is 1:2. This means that for every 1 mole of hydrogen, 2 moles of hydrogen chloride are produced.

Given that 20 grams of hydrogen is reacted, we can calculate the number of moles of hydrogen using the molar mass of hydrogen, which is 1 g/mol. Therefore, the number of moles of hydrogen is 20 grams / 1 g/mol = 20 moles.

According to the molar ratio, the number of moles of hydrogen chloride produced is twice the number of moles of hydrogen, which is 20 moles * 2 = 40 moles.

To find the mass of the resulting substance, we can use the molar mass of hydrogen chloride, which is approximately 36.46 g/mol. Therefore, the mass of the resulting substance is: Mass = 40 moles * 36.46 g/mol = 1458.4 grams

So, the volume of hydrogen is 448 L and the mass of the resulting substance is 1458.4 grams.