30 сент. 2021 г.

Cobalt chloride paper is useful because the hydration/dehydration reaction occurs readily making the paper an indicator for water.

So, the correct answer is “Option C”. Note: On heating, the hydrates lose its water molecules and thus cobalt chloride turns to blue which is water free form.

Продолжительность: 3:33
Опубликовано: 13 дек. 2022 г.

The paper turns blue as anhydrous cobalt(II) chloride is formed. When you add water to it, it turns pink again. The next short piece of video shows this as well ...

9 апр. 2021 г. · When it reacts with water it results in the formation of hydrated Cobalt (II) chloride which is pink in color. Thus, this color change can be ...

10 окт. 2024 г. · So, anhydrous cobalt(II) chloride can be used to test for water. This test is usually done with cobalt chloride paper. anhydrous cobalt(II) ...

9 мая 2016 г. · Anhydrous Cobalt (II) chloride is a pale blue substance. When it reacts with water it results in the formation of hydrated Cobalt (II) chloride ...

Cobalt chloride paper is used to indicate the presence of water - changing from blue to pink in a hydration reaction.