飽和蒸氣壓
飽和蒸氣壓 飽和蒸氣壓指在密閉空間內,某種物質在給定的溫度下,該物質的液相、氣相共存時的氣體壓強。 通常對水來說 溫度越高,蒸氣壓越大。 蒸發:液體的表面具有較高動能的分子c若能克服分子間的引力c而逃逸出液體表面形成氣體的現象c稱為蒸發.1 蒸發的過程屬於吸熱反應c在任何溫度下皆可發生. 2 蒸氣分子凝聚成液體的過程稱為凝結c屬於放熱反應.
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