Determine the volume of hydrogen released when zinc reacts with 14.6 g of hydrochloric acid.

univerkov | January 17, 2021 | education

Given:
m (HCl) = 14.6 g
To find:
V (H2)
Decision:
2HCl + Zn = ZnCl2 + H2
n (HCl) = m / M = 14.6 g * 36.5 g / mol = 0.4 mol
n (HCl): n (H2) = 2: 1
n (H2) = 0.4 mol / 2 = 0.2 mol
V (H2) = n * Vm = 0.2 mol * 22.4 L / mol = 4.48 L
Answer: 4.48 L

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.