Предмет: Химия, автор: XALZ

Як виготовити 5% розчин солі

Ответы

Автор ответа: Liza4ka30

Зважте 5 грам солі. Можна використовувати будь-який вид солі, включаючи кухонну сіль. Сіль насипати в градуйовану циліндр або мірну колбу, що містить приблизно 180 мл води. Колту акуратно переверніть, поки вся сіль не розчиниться. Додайте достатньо води, щоб довести кінцевий об'єм до 200 мл. Не заміряйте просто 200 мл води і додайте 5 г солі. Додавання солі змінює кінцевий об'єм розчину і впливає на кінцевий відсоток.

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