ANALYSIS AND SEPARATION

Question 1

is the study of the separation, identification, and
quantification of the chemical components of
natural and artificial materials.

Answer 1

analytical chemistry

Question 2

is the simplest physical property we can exploit in a separation.

Answer 2

size

Question 3

In a _______ we separate a particulate interferent from soluble
analytes using a filter with a pore size that will retain the
interferent.

Answer 3

filtration

Question 4

The solution that passes through the filter is called
the

Answer 4

filtrate

Question 5

material retained by the filter is

Answer 5

retentate

Question 6

three types of membrane filters

Answer 6

centrifugal filter
membrane syringe filter
disposable filter

Question 7

is another example of a separation technique in which size is used
to separate the analyte and the interferent

Answer 7

dialysis

Question 8

is made using cellulose and fashioned into tubing, bags, or
cassettes.

Answer 8

dialysis membrane

Question 9

is widely used in the
analysis of polymers, and in biochemistry, where it is used for the
separation of proteins.

Answer 9

size-exclusion chromatography

Question 10

If the analyte and the interferent have different masses or
densities, then a separation using _______ may be
possible.

Answer 10

centrifugation

Question 11

One widely used technique for preventing an
interference is to bind the interferent in a strong,
soluble complex that prevents it from interfering in the
analyte’s determination.

Answer 11

Masking

Question 12

When the analyte and the interferent are miscible liquids, separation
by _______ is possible if their boiling points are significantly different.

Answer 12

distillation

Question 13

It involves the immediate change of liquid state to vapours state
and condensing of vapours by cooling. This method is only
applicable for liquids having a minimum boiling point of difference
of 25 degrees Celsius

Answer 13

simple distillation

Question 14

The liquids whose boiling point difference is more than 25 degree
Celsius or the liquids which have similar boiling points performs this
process. I

Answer 14

fractional distillation

Question 15

It is a process involving thermally responsive compounds
(compounds that are sensitive to heat). It requires low
heating at temperatures because the temperature of the
steam can be controlled as compared to surface
temperature. E

Answer 15

steam distillation

Question 16

High boiling mixtures are eligible for this process. In this
process instead of increasing the temperature, the pressure
of the liquid is decreased to bring it to vapour pressure, and
then the boiling, as well as the distillation process, is
carried out

Answer 16

vacuum distillation

Question 17

It is a process that takes place in a long container
with the help of using a zone heater

Answer 17

zone distillation

Question 18

Some compounds can react with air when
exposed. So to distillate those compounds, this
process is useful. It is the same as vacuum
distillation but we substitute the vacuum with an
inert gas after the completion of distillation This
method uses the Perkin Triangle apparatus

Answer 18

Air-sensitive distillation

Question 19

The distillation involves the liquid mixture to
travel short distances of just a few
centimetres.

Answer 19

short-path distillation

Question 20

When the sample is a solid, ______ may
provide a useful separation of the analyte and the
interferent.

Answer 20

sublimation

Question 21

is a useful tool for
separating analytes and interferents.

Answer 21

chemical reactivity

Question 22

We call the process of moving a species from one phase to
another phase an ________.

Answer 22

extraction

Question 23

The three most common types of extractions
are:

Answer 23

liquid/liquid, liquid/solid, and acid/base