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Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности газов.

Добавлено: Ср дек 04, 2019 12:35 pm
Liceum3
Умение решать химические задачи – важная составляющая знаний по предмету. Один из типов задач – это задачи на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности газов. Подобные задания входят в ЕГЭ.
Этот вид расчетов чрезвычайно важен для химической практики, т.к. позволяет на основании экспериментальных данных определить формулу вещества (простейшую и молекулярную). На основании данных качественного и количественного анализов вы находите сначала соотношение атомов в молекуле (или другой структурной единице вещества), т.е. его простейшую формулу.Какую информацию несет молекулярная формула? ( качественную и количественную)
Часто используется при решении задач понятие эмпирическая формула. 
Эмпирическая формула любого вещества – это формула, которая выражает простейшее целочисленное отношение элементов, содержащихся в данном веществе. Эмпирические формулы иногда называют простейшими формулами. Для вывода эмпирической формулы вещества достаточно знать его количественный состав ( массовые доли элементов).
Молекулярная (истинная) формула -  формула, в которой отражается реальное число атомов каждого вида, входящих в молекулу вещества.
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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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Re: Решение задач на нахождение молекулярной формулы органических веществ по массовым долям и относительной плотности га

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