Experimental Techniques Flashcards by Avril Joy Lim | Brainscape

Q

Measuring approximate volumes of liquids

A

Beaker

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Q

Fixed volume

A

Pipette

Volumetric flask

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Q

Accurately measure nearest 0.1 cm3

A

Burette

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Q

Accurately measure nearest 1 cm3

A

Measuring cylinder

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Q

Measure small volumes of liquid

A

Syringe

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Q

Measure volumes of gas

A

Gas syringe

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Q

Method to collect insoluble gases

A

Displacement of water

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Q

Examples of insoluble gases

A

Oxygen and hydrogen

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Q

Method to collect gases denser than air

A

Downward delivery

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Q

Examples of gases denser than air

A

Carbon dioxide
Hydrogen chloride
Chlorine

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Q

Method to collect gases less dense than air

A

Upward delivery

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Q

Examples of gases less dense than air

A

Hydrogen

Ammonia

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Q

What is fused calcium chloride

A

Calcium chloride which has been heated

Can be used to dry gases which do not react with calcium chloride

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Q

Example of gas which react with fused calcium chloride

A

Ammonia. It will form ammonium chloride

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Q

Common drying agent which cannot dry basic gases

A

Concentrated sulfuric acid

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Q

What are basic gases

A

Gases which form an alkali with pH>7 in water

Eg ammonia
Amines

Q

Drying agent to dry basic gases

A

Quick lime