180 g of a 15% barium chloride solution was evaporated to a solution weight of 145 g.
| January 19, 2021 | education
180 g of a 15% barium chloride solution was evaporated to a solution weight of 145 g. What is the percentage concentration of the solution?
Determine the mass of barium chloride before evaporation:
m (BaCl2) = (ω1 * m1) / 100% = (15% * 180 g) / 100% = 27 g.
Since during evaporation the mass of barium chloride remains unchanged, we calculate the percentage concentration of the new solution:
ω2 = (m (BaCl2) / m2 (solution)) * 100% = (27g / 145g) * 100% = 18.6%
Answer: the percentage concentration of the solution is 18.6%.
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