A 10 percent alcohol solution of iodine is sold in pharmacies
| February 2, 2021 | education
A 10 percent alcohol solution of iodine is sold in pharmacies, how much iodine and solvent is needed to prepare 500 grams of such a solution.
Determine the mass of iodine required to prepare 500 grams of a 10% solution:
W (in-va) = m (in-va) / m (solution) • 100%, which means
m (I2) = (solution) • W (I2) / 100% = 500 • 10% / 100% = 50 g.
The mass of the solvent is:
m (r-la) = m (r-ra) – m (v-va) = 500 – 50 = 450 g.
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