Determination of density of given liquid sample by using specific gravity bottle
Aim
To determine the density of the given liquid
sample.
Requirements
·
Specific
gravity bottle
·
Liquid
sample
·
Water
·
Weighing
balance
Principle
Specific
gravity is the ratio of the density of the substance to the density of the
water. The density of both the substances should be recorded at same
temperature unless specified. It is defined as the ratio of mass of substance
to the ratio of mass of an equal volume of water at same specified temperature.
Specific gravity of substance = Mass of substance /
Mass of water
Specific
gravity is the ratio of weight of liquid to the weight of water. Density is
expressed in g/ml.
Procedure
1.Weight the
dried and cooled empty specific gravity bottle.
2.The bottle
was completely filled with distilled water (reference) and weighed.
3.After
remove the distilled water from specific gravity bottle.
4. Clean,
dry the specific gravity bottle.
5.The bottle
was filled with given liquid sample and
weight.
Calculate
the density of given liquid by using following formula,
Density of
liquid sample = Mass of liquid sample / Mass of water ×Density of water
Note : Density of water is 0.9998 g/ml
 |
| Specific gravity bottle filled with liquid |
Calculation:
Room
temperature = ---------- °C
Weight of
empty specific gravity bottle (W1) = ------------------- g
Weight
of specific gravity bottle and water (W2) = -------------------g
Weight of specific
gravity bottle and liquid sample (W3) =-------------------g
Mass/ weight
of Water = W2 – W1
=-------------------------
=------------------------- g
Mass/ weight
of liquid sample = W3 – W1
= -------------------------
= ------------------------- g
Density of
liquid sample = Mass of liquid
sample / Mass of water ×Density of water
=---------------------------
= --------------------------
= -------------------------- g/ml
Report
The density
of the given liquid sample was found to be ----------------------- g/ml.
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