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Plaster of Paris should be stored in a moisture-proof container. Explain why?
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Solution
The Plaster of Paris should be stored in a moisture-proof container as it absorbs water from moisture and turn into hard substance (Gypsum) as shown in following chemical equation.
`CaSO_4 . 1/2 H_2O+ 1 1/2H_2O`
Concept: Important Salts in Daily Life - Preparation and Uses of Plaster of Paris
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