Determination of formulae - 3.2 (3) Flashcards Preview

OCR (A) A Level Chemistry - Module 2 - Chapter 3 > Determination of formulae - 3.2 (3) > Flashcards

Flashcards in Determination of formulae - 3.2 (3) Deck (7)
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1
Q

What is hydrated?

A

many coloured crystals

2
Q

What is part of the coloured crystals’ crystalline structure?

A

water molecules

3
Q

What is this water known as?

A

water of crystallisation

4
Q

When blue crystals of hydrated copper sulfate are heated, what happens?

A

the bonds that hold the water within the crystal are broken and the water is driven off

5
Q

When the bonds are broken, what then happens?

A

this then become white anhydrous copper sulfate

6
Q

How is the water of crystallisation shown in the formula of hydrated copper sulfate?

A

with a large dot between the compound formula and the five water units

7
Q

What is the equation for when water is removed?

A

CuSOv4.5Hv2O (s) HYDRATED —> CuSOv4 (s) ANHYDROUS + 5Hv2O(l)