Acids, Bases and Salts — Science STD 10 — Question
CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts2 Marks
Question
Plaster of Paris should be stored in a moisture-proof container. Explain why?
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Answer
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.$\text{CaSO}_4.\frac{1}{2}\text{H}_2\text{O}+1\frac{1}{2}\text{H}_2\text{O}\xrightarrow{\text{Heat}}\text{CaSO}_4.2\text{H}_2\text{O}\$\text{Plaster of Paris})(\text{Water})\ \ \ \ \ \ \ \ \ \ \ \ (\text{Gypsum})\ \ \ \ $
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