Question

В 150 мл воды растворили 22,4 л хлороводорода.Вычислить массовую долю хлороводорода в полученном растворе

Answer 1

N(HCl)= 22,4 л / 22,4 л/моль = 1 моль
m(HCl) = 1 моль * 36,5 г/моль = 36,5 г
омега (HCl) = 36,5/ (150 + 36,5)* 100% = 19,6%

Answer 2

Calculation of the Mass Fraction of Hydrochloric Acid in the Solution

To calculate the mass fraction of hydrochloric acid (HCl) in the solution, we need to know the mass of HCl and the total mass of the solution.

Given: - Volume of water: 150 mL - Volume of hydrochloric acid (HCl): 22.4 L

To find the mass of HCl, we can use its molar mass. The molar mass of HCl is approximately 36.46 g/mol.

Using the ideal gas law, we can convert the volume of HCl gas to moles: ``` moles of HCl = volume of HCl / molar volume of HCl ``` The molar volume of HCl at standard temperature and pressure (STP) is 22.4 L/mol.

Now, we can calculate the mass of HCl: ``` mass of HCl = moles of HCl * molar mass of HCl ```

Next, we need to calculate the total mass of the solution. Since the volume of water is given, we can assume that the density of water is 1 g/mL. Therefore, the mass of water is: ``` mass of water = volume of water * density of water ```

Finally, we can calculate the mass fraction of HCl in the solution: ``` mass fraction of HCl = mass of HCl / (mass of HCl + mass of water) ```

Let's perform the calculations:

1. Calculate the moles of HCl: ``` moles of HCl = 22.4 L / 22.4 L/mol = 1 mol ```

2. Calculate the mass of HCl: ``` mass of HCl = 1 mol * 36.46 g/mol = 36.46 g ```

3. Calculate the mass of water: ``` mass of water = 150 mL * 1 g/mL = 150 g ```

4. Calculate the mass fraction of HCl: ``` mass fraction of HCl = 36.46 g / (36.46 g + 150 g) = 0.195 ```

Therefore, the mass fraction of hydrochloric acid in the obtained solution is approximately 0.195 or 19.5%.

Please note that the above calculations assume ideal conditions and may not account for any impurities or deviations from ideal behavior.