Practical chemistry practice · Mixed difficulty

to decrease $\left[\mathrm{OH}^{-}\right]$ conc.

to increase $\left[\mathrm{OH}^{-}\right]$ conc.

for making HCl

to increase $\left[\mathrm{Cl}^{-}\right]$ conc.

$\mathrm{Mg}^{2+}$

$\mathrm{Na}^{+}$

$\mathrm{Ca}^{2+}$

All

Draw the liquid up to the line on the pipet
using a pipet bulb. Squeeze the bulb to force
all the liquid in the pipet into the receiving
container

Introduce the liquid into the top end of the
pipet until it is filled to the line. Allow the
liquid to drain into the desired container. Blow
on the pipet to release the last drop

Draw the liquid above the line on the pipet
using a pipet bulb. With a finger on the top of
the pipet allow the curve of the meniscus to
drop to the line. Place the tip of the pipet
against the side of the receiving container and
allow the liquid to drain

Draw the liquid above the line on the pipet by
sucking on the open end of the pipet. Place a
thumb on the top of the pipet and allow the
curve of the meniscus to drop to the line.
Allow the liquid to drain into the receiving
container pipet against its si

Oxidising agent

Dehydrating agent

Reducing agent

Bleaching agent

10

4

3

7