Anhydrous and hydrated salts Flashcards

1
Q

What does anhydrous mean?

A

Contains no water molecules

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2
Q

What does hydrated mean?

A

A crystalline compound containing water molecules

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3
Q

What are waters of crystallisation?

A

Water molecules that are chemically bonded into a crystalline structure of a compound

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4
Q

What is the formula of a hydrated salt?

A

MX.x H2O (MX = anhydrous salt which is a metal/ammonia)

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5
Q

How do you find the formula of a hydrated salt?

A

The same as empirical formula

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6
Q

What is a procedural uncertainty?

A

Uncertainties to do with the experimental method

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7
Q

Why do you heat the solid twice in this experiment?

A

To make sure all the water is heated off

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8
Q

If masses are different after reheating, what do you do?

A

Continue to heat and weigh periodically until there is no change in mass

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