How do you dilute citric acid for cleaning? For cleaning, simply mix the anhydrous (powder) citric acid with water. The ratio will depend on what surface you are cleaning. A 5% solution will be ...

The activity works well with anhydrous calcium chloride. Keep the container tightly closed to prevent the material from absorbing moisture from the air. Universal indicator solution is also available ...

nitric acid and sodium hydroxide, and anhydrous copper sulfate and water. Endothermic reactions include solid citric acid and sodium hydrogencarbonate, and dissolving ammonium nitrate in water.