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E. Explain the similarity and differencein two events, namely adding NaOHto water and adding CaO to water. |
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Answer» NaOH you are only dissolving the material, whereas CaO REACTS to make Ca(OH)2 . The calcium HYDROXIDE has a lower SOLUBILITY in water than NaOH and so will precipitate out. Adding CaO to Water - A lot of heat (exothermic reaction) is produced in the reaction, which may even CAUSE the water to boil. |
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