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Calcium oxide reacts with water

Calcium oxide reacts with water. A small amount of calcium oxide (CaO, quicklime) in a test tube is mixed with water. Calcium hydroxide (Ca(OH)2, hydrated lime or caustic lime or slaked lime) is produced in the exothermic reaction: CaO + H2O -> Ca(OH)2. This process is known as slaking. Calcium hydroxide is poorly soluble in water. It still produces enough hydroxide ions to turn phenolphthalein indicator pink, indicating an alkaline resulting solution.
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Title:
Calcium oxide reacts with water
Caption:
Calcium oxide reacts with water. A small amount of calcium oxide (CaO, quicklime) in a test tube is mixed with water. Calcium hydroxide (Ca(OH)2, hydrated lime or caustic lime or slaked lime) is produced in the exothermic reaction: CaO + H2O -> Ca(OH)2. This process is known as slaking. Calcium hydroxide is poorly soluble in water. It still produces enough hydroxide ions to turn phenolphthalein indicator pink, indicating an alkaline resulting solution.
Credit:
Album / Science Source / GIPhotoStock
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Image size:
3395 x 5140 px | 49.9 MB
Print size:
28.7 x 43.5 cm | 11.3 x 17.1 in (300 dpi)
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