Determine what the mass fraction of the solute in the solution is equal to if 45 g of H3PO4
| January 17, 2021 | education
Determine what the mass fraction of the solute in the solution is equal to if 45 g of H3PO4 and 180 ml of water were taken for its preparation.
Given:
m in islands (H3PO4) = 45 g
V (H2O) = 180 ml = 180 g
To find:
w (H3PO4)
Decision:
m solution (H3PO4) = m in-va (H3PO4) + m (H2O) = 45 g + 180 g = 225 g
w (H3PO4) = m in / m solution * 100% = 45 g / 225 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.
