Further Mole Calculation and Titrations

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What is the formula that links moles concentration and volume

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1

What is the formula that links moles concentration and volume

Moles = concentration (mol/dm³) x volume (dm³)

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2

How does dm³ link to cm³

1dm³ = 1000 cm³

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3

How to carry out calculations involving gas volumes and the molar volumes of gas at room temperature and pressure.

Volume = moles x 24 dm³

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4

Describe how to carry out an acid - alkali titration

Measure out 25cm³ of HCl using a glass pipette

Transfer to a conical flask

Fill the burette with sodium hydroxide

Take the initial reading on the burette - record to 2dp

Add a few drops of phenolphthalein indicator to the HCl (colourless)

Add sodium hydroxide until indicator changes colour

Take final reading on burette when it reaches the permanent pink colour

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5

What is a titration for

Used to find out precisely how much acid neutralises a certain volume of alkali or vice versa

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