Techniques

Question 1

Why are pipettes used in chemistry?

Answer 1

A pipette is used to accurately measure and transfer a fixed volume of liquid, especially in titrations.

Question 2

Why are burettes used in chemistry?

Answer 2

A burette is used to accurately and precisely deliver variable volumes of a liquid, especially in titrations.

Question 3

How do you prepare a standard solution?

Answer 3

‘We Don’t Rush The Titration Inaccurately’

W – Weigh the solute accurately.
D – Dissolve it in a small amount of distilled water.
R – Rinse the beaker and stirrer into the volumetric flask.
T – Transfer solution to a volumetric flask.
T – Top up to the mark with distilled water (bottom of meniscus).
I – Invert the flask to mix thoroughly.

Question 4

What are the two methods of collecting a gas?

Answer 4

Under water - for insoluble gases, using a gas syringe.

Question 5

How does distillation work?

Answer 5

Distillation is a method used to separate liquids based on their boiling points.