Проверите предложения? Нужно было было дать ответы на вопросы? ГОВОРЮ НА ПЕРЕД АНГЛИЙСКИЙ ЗНАЮ НИЖЕ СРЕДНЕГО.
Вот вопросы:
1. What is
pyramidon?
2. What
tests for identity are used?
3. What kind
of solution should be the precipitate?
4. How many
grams of the preparation should be taken to get an assay?
5. How is
the preparation stored?
Ответы нужно было давать по тексту, они верные, но сами предложения навряд ли я составила верно!
1. Pyramidon this
is white crystals or a white crystals line powder with a
hardly noticeable yellowish tinge, odorless, or a taste faintly bitter.
2. In order to identify piramidon add
2 drops of ferric chloride solution to 2 ml of pyramidon solution (1:25); acidify the
obtained liquid with several drops of dilute hydrochloric acid; mix 2 ml of
pyramidon solution and 1 ml of silver nitrate solution.
3. Kind a
solution of the precipitate (1:25) should be transparent, colorless and of a
weak alkaline reaction.
4. To get an assay
should be take 0.5 g of the preparation.
5. Preparation
stored with precautions in well-stoppered jars, in a place protected from light.