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2 April, 00:40

Which phase change at standard temperature and pressure represents sublimation?

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  1. 2 April, 04:34
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    Substances on Earth can exist in three phases namely, solid, liquid or gas. The phase can be changed from one to other by any of six changes of phase: melting, condensation, freezing, vaporization, decomposition or sublimation.

    Chemical process in which a solid turns to a gas without going to liquid stage is known as sublimation. It is an endothermic (absorbs heat) process. For example: Transformation of dry ice (solid carbon dioxide) to vapors to form clouds.

    Hence, phase change at standard temperature and pressure which represents sublimation is solid turns to a gas without going to liquid stage.
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