How do you remove water from rock salt?

To remove water from rock salt, you need to evaporate the water. Here's how it's done, based on the reference material provided:

Removing Water from Rock Salt: A Step-by-Step Guide

The process involves separating the salt from the water, and one method uses heat to achieve this.

Initial Wash (not mentioned in provided reference, but useful): Place the rock salt under cold running water for a short time to help remove any loose impurities.
Dissolving the Salt: The salt should be dissolved in water. This will require a sufficient amount of water to ensure it is completely dissolved.
Heating and Evaporation: Heat the water until it is gently boiling. This process causes the water to evaporate and leave behind the salt. The reference says to continue heating until the water begins to evaporate off. As the water evaporates, the salt will remain in the container.
- Practical Tip: Use a shallow dish or beaker to increase the surface area, which speeds up evaporation.
Collecting the Salt: Once all the water has evaporated, you'll be left with purified salt crystals.
- Observation: The salt will appear as a solid deposit at the bottom of your container.

Heating is Crucial: The process depends on heat to change the water from liquid to a gaseous state.
Evaporation is the Goal: The water must turn into vapor and be separated from the solid salt.
Pure Salt: By evaporating the water, you get salt that's purer than the rock salt you started with.

Step	Action	Purpose
Dissolving	Place rock salt in water	To form a saline solution.
Heating	Heat water to boiling point	To begin evaporation of the water.
Evaporating	Allow water to evaporate	To separate water from the dissolved salt.
Collecting	Collect the remaining solid.	To obtain the salt.