Предмет: Физика, автор: anyutakobzar

ПОЖАЛУЙСТА!!! Ответьте на 2 вопроса по физике, ну уж очень нужно!!!;****

Как заставить кипеть жидкость при Т > Tкипения? Как заставить кипеть жидкость при Т < Tкипения?

Ответы

Автор ответа: strc
0

Если при обычных условиях продожить нагревать жидкость после точки кипения, то она прокипятится и испарится. Но нам, очевидно, говорят о точке кипения при нормальных условиях. Поэтому мы можем поместить жидкость в герметичный сосуд, который сможет выдержать повышенное давление - тогда точка кипения будет выше, а значит вода будет кипеть при большей температуре. (Это происходит из-за того что мы создали избыточное давление, при нем температура кипения повышается.)

 

Второй случай анологичен, только теперь нужно понизить давление. Сделать это можно разными способами. Допустим, подняться в горы, где давление ниже, а там темп. кипения будет ниже. Жидкость будет закипать при меньшей температуре.

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