Which of the following even occurs when POP is mixed with water A. Endothermic reaction B. Displacement reaction C. Exothermic reaction D. Decomposition reaction
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Answer:
a. Endothermic reaction
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Answer:
C. Exothermic reaction
Explanation:
Plaster of Paris when reacts with water liberating heat through crystallization. Gypsum is produced by heating plaster of paris to about 150-degree Celsius. When the dry plaster of paris powder is mixed with water it reforms into gypsum. Depending upon the temperature gypsum converts to hemihydrate or anhydrous form
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