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Laabri

Separation techniques RGSHW

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Last updated 3 months ago
10 Nsɛmmisa
5
2
6
1
4
1
1
1
1
4
Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Match the labels

Mmuae Afoforo a Wobɛpaw:
Beaker
Samples
solvent
line in pencil
Chromatography paper
Asemmisa {{asɛmmisaAhyɛnsode}}
2.

The bottom of paper must be

The pencil line must be

Mmuae Afoforo a Wobɛpaw:
above the solvent
in the solvent
Asemmisa {{asɛmmisaAhyɛnsode}}
3.

  • A

  • B

  • C

  • X

  • one dot only

  • two or more dots

  • Pure sample

  • Mixture

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Sample

  • A

  • B

  • C

  • D

  • Safe to drink

  • Not safe to drink

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Select the correct option.

Note - the more soluble a dye is the further the dot will move.

Note - the more soluble the dye the larger the Rf value will be.

Note - the Rf value can not be more than 1.

Mmuae Afoforo a Wobɛpaw:
False
True
Asemmisa {{asɛmmisaAhyɛnsode}}
6.

Rf = /

Rf =

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

Note - the soluble a dye is the further the dot will move.

Note - the more soluble the dye the the Rf value will be.

Note - the Rf value can not be more than .

Mmuae Afoforo a Wobɛpaw:
1
smaller
more
less
0.5
larger
Asemmisa {{asɛmmisaAhyɛnsode}}
8.

How many dyes are there is A

How many dyes are there in B

How many dyes are there in D

How many dyes are there in X

Which dye is not found in sample X

Mmuae Afoforo a Wobɛpaw:
A
3
4
C
2
1
B
Asemmisa {{asɛmmisaAhyɛnsode}}
9.

Start line not drawn in so line will

Samples are in the so the samples will in the water instead of moving up the .

Mmuae Afoforo a Wobɛpaw:
solvent
dissolve
paper
pencil
Asemmisa {{asɛmmisaAhyɛnsode}}
10.

Sample B did not move as sample is soluble in the solvent used.

To fix this we would use a solvent, for example alcohol or propanol in which sample B soluble

Mmuae Afoforo a Wobɛpaw:
different
ethanol
is
is not