What mass of water. It is necessary to dissolve 15 g of sugar to prepare a solution with a mass fraction of sugar 10%
August 30, 2021 | education|
Find the mass of the corresponding sugar solution:
mr.-ra (sugar) = m (sugar) * 100 / w (sugar) = 15 * 100/10 = 150 (g).
Let’s find the mass of water needed to prepare such a solution:
m (H2O) = mr.-ra (sugar) – m (sugar) = 150 – 15 = 135 (g).
Thus, to prepare a 10% sugar solution, 15 g of sugar must be dissolved in 135 g of water.
Answer: 135 g.
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