What mass of sodium chloride is needed to prepare 5L. saline solution?
| September 11, 2021 | education
Physiological solution – sodium chloride solution – NaCl – with a mass fraction of sodium chloride of 0.9%.
Since the mass fraction of sodium chloride is small, we have the right to take the density of the solution as a unit, as well as the density of water.
In this case, we can calculate the mass of the solution: we get 5000 grams of saline (5000 ml * 1 g / ml).
m (NaCl) = (5000 * 0.9%) / 100%
m (NaCl) = 45 g.
Answer: m (NaCl) = 45 g.
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