How much air is required to burn 2.5 g of vanadium?

univerkov | January 17, 2021 | education

Given:
m (V) = 2.5 g
To find:
V (O2)
Decision:
4V + 5O2 = 2V2O5
n (V) = m / M = 2.5 g / 51 g / mol = 0.05 mol
n (V): n (O2) = 4: 5
n (O2) = 0.05 mol: 4 * 5 = 0.06 mol
V (O2) = n * Vm = 0.06 mol * 22.4 l / mol = 1.344 l
Answer: 1,344 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.