STOGS Y11 Titration technique

A standard solution is one...

• that is 1.0 mol/dm³

• that contains NaOH

• of a known concentration

• with a known solute

When taking a burette reading, you should NOT

• have your eye level with the meniscus

• read to two decimal places

• read the level of the bottom of the meniscus

• remove your goggles for a better view

When filling a burette, you should ensure (choose all correct answers)

• you use a small funnel

• the top of the burette is below eye level

• you are wearing goggles

• the tap is closed

The reading on this burette is

• 20.00

• 19.95

• 19.8

• 19.80

Is this burette tap open or closed?

• open

• closed

What must you remember when filling a burette? (Choose all correct answers)

• Have the top below eye level

• Remove the funnel before you titrate

• Close the tap first

• Put a small beaker under the burette and fill the jet space below the tap.

Before filling a burette, you should

• taste the solution you will later use to fill it

• rinse it with the solution you will later use to fill it

• remove your goggles for a better view

• rinse it with distilled water and then the solution you will later use to fill it

Titrations are useful for finding out (choose only one answer)

• how much burettes cost to replace

• the concentration of a solution

• your glasses when you've lost them

• why you should close the burette tap before filling it

Which of these titres are concordant?

• 12.70cm³

• 12.30cm³

• 12.40cm³

• 12.05cm³

When using a pipette to get a calibrated amount, you should fill it so that the bottom of the meniscus is on the line and...

• ensure all the liquid leaves the pipette

• touch the tip of the pipette to the surface of the solution after it has flowed out under gravity

• shake the pipette after the solution has flowed out under gravity

• blow the solution out of the pipette