11.2 L of hydrogen chloride was dissolved in 73 ml of water. What is the percentage of concentration

univerkov | September 9, 2021 | education

11.2 L of hydrogen chloride was dissolved in 73 ml of water. What is the percentage of concentration of the solution turned out?

1) To find the percentage concentration of the resulting solution, you need to divide the mass of the solute by the mass of the entire solution and multiply the result by 100%.
2) Find the mass of hydrogen chloride: m (HCl) = n (HCl) * M (HCl) = (11.2 l / 22.4 l / mol) * 36.5 g / mol = 18.25 g.
3) Then we have: ω = (m (HCl) / m (p – pa)) * 100% = (18.25 g / (18.25 g + 73 g)) * 100% = 20%.
ANSWER: 20%.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.