Question

How will you separate the color components of a mixture of red and blue ink?

Answer 1

Step 1 Understanding the concept:

• Chromatography: It is a technique for separating the components of a mixture.
• There are two phases to it: one that is stationary and the other that is mobile.
• The stationary phase is a porous solid (filter paper, while the mobile phase is the liquid into which the mixture is added for chromatography.
• Paper Chromatography is used to separate the colored components in a mixture of red and blue inks.

Step 2 Explanation:

• Apparatus Required: Gas jar, glass rod, filter paper strip, jar cover,
• Requirement:
  Red and blue inks, as well as alcohol and distilled water, were used to create this piece.

Procedure:

• Draw a line above 3 cm of one end of a Filter paper ( Whatman strip with a pencil (20 x 2 cm).
• Draw a second line lengthwise from the paper's center.
• Using a fine capillary tube, place a drop of a red and blue dye mixture at a fixed position. Let it dry outside in the sun.
• Apply a second drop to the same spot and let it dry. Repeat the process a couple of times more until the area is well-mixed.
• Suspend the filter paper vertical in a gas container containing the solvent (eluent) using a glass rod, keeping the pencil line (and the spot) about 2 cm above the solvent level over the container with a lid, and leave it alone.
• It's worth noting the increasing solvent level as well as the mix of red and blue inks.
• Once the solution has risen around 15 cm, you'll notice two different patches of blue and red on the filter paper.
• Take the filter paper from the jar and make a note of how far the solvent has risen on the paper with a pencil. This is referred to as the solvent front.
  The paper must be thoroughly dried before using it. In the blue and red spot centers, make pencil marks.