Question

Раньше для производства чернил использовали орешки- галлы, встречающиеся нижних сторонах дубовых листьев обычно к концу лета. Они образуются на листьяхдуба от укуса крохотной мушки орехотворки.А как с помощью этих чернильных орешков можно проверить, есть ли в питьевойили минеральной воде железо?​

Answer 1

Ответ:

Растворить и пронаблюдать за реакцией

Объяснение:

Answer 2

Using Oak Gall Ink to Test for Iron in Water

In the past, oak galls were commonly used to produce ink. These galls are growths that form on the lower sides of oak leaves, usually by the end of summer, as a result of tiny wasp larvae biting the leaf. The ink produced from oak galls contains tannic acid, which can react with iron to produce a dark color. This property can be used to test for the presence of iron in water.

Testing for Iron in Water using Oak Gall Ink:

To test for the presence of iron in water using oak gall ink, you can follow these steps:

1. Prepare the Oak Gall Ink: Crush the oak galls and soak them in water to produce the ink. This ink contains tannic acid, which reacts with iron to produce a dark color.

2. Collect the Water Samples: Collect samples of the water to be tested in clear containers.

3. Add the Oak Gall Ink: Add a small amount of the oak gall ink to the water samples.

4. Observe the Reaction: If the water contains iron, the ink will react with it and produce a dark color, indicating the presence of iron.

This method provides a simple and historical way to detect the presence of iron in water using oak gall ink, which reacts with iron to produce a visible color change.