The crystals precipitated from saturated solution must be unsaturated solution? What happens when saturated solution cools down? What happens when the unsaturated solution heats up? When will crystals precipitate? Does the saturated solution precipitate crystals when heated? Crystals precipitated from saturated solution must be unsaturated solution? What happens when saturated solution cools down? What happens when the unsaturated solution heats up? When will crystals precipitate? Does the saturated solution precipitate crystals when heated?

The crystals precipitated from saturated solution must be unsaturated solution? What happens when saturated solution cools down? What happens when the unsaturated solution heats up? When will crystals precipitate? Does the saturated solution precipitate crystals when heated? Crystals precipitated from saturated solution must be unsaturated solution? What happens when saturated solution cools down? What happens when the unsaturated solution heats up? When will crystals precipitate? Does the saturated solution precipitate crystals when heated?

When the saturated solution is cooled down, crystals will precipitate out of the solution. When the saturated solution is cooled down, crystals will precipitate out of the solution. At this time, the mass of solute in the solution will decrease, the mass of solution will decrease and the mass of solvent will not change. The mass fraction of solute in the solution will also decrease, but it is still saturated.

When the sodium chloride solution evaporates, the heating is stopped immediately when the crystal precipitates, which makes the sodium chloride lower than the actual value? Why?

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