1

Lab Apparatus

2

Beaker

To measure approximatevolume of liquid.(accurate to 1 ml)

e.g. 20 ml

3

Conical flask

To measure approximatevolume of liquid.(accurate to 1 ml)

e.g. 50 ml

4

Measuring cylinder

To measure approximatevolume of liquid.(accurate to 1 ml)

e.g. 30 ml

5

Pipette

To measure fixed volume of liquid accurately.(accurate to 0.1 ml)

e.g. 5.0 ml, 10.0 ml, 25.0 ml

mark

6

Pipette

A pipette filler is usuallyused to draw the liquid upwhich is then dispensed intoa conical flask.

7

Burette

To measure avariable volume of liquid accurately.(accurate to 0.1 ml)

e.g. 24.2 ml

0 ml mark

50 ml mark

8

Volumetric flaskTo measure fixed volume of large amount of liquid accurately.(accurate to 0.1 ml)

e.g. 100.0 ml, 250.0 ml

9

Test tubes

To contain small amount ofsolids/liquids for experiments.

e.g. 2 ml of dilute HCl

10

Separating funnel

To separate out 2 immiscible liquids in a mixture.(immiscible liquids are liquids which do not mix to form one homogenous layer)

e.g. oil/water mixture

11

TTHHEE PPRROOBBLLEEMM :: You are given 2 plastic cupseach containing exactly 50 cm3 of water.You have to change the volume in 1 cup to35 cm3 using only the pipettes given. Forthe other cup, you have to change thevolume to 35 cm3 also but using only theburette to measure the final volume.

AAPPPPAARRAATTUUSS GGIIVVEENN ::-10 ml pipette 25 ml pipette pipette filler50 ml burette paper towelNote : You will not be provided with any morewater or any other container which could holdwater.

12

First cup : Withdraw 25 ml by pipette and reject.Add 10 ml by pipette from the second cup.

Second cup :Add the remaining 40 ml to the burette.Dry the cup and add 35 ml from the burette.

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