Why does pure water can be separated from ink water by a simple distillation?

Answer 1

There's many ways to do this sort of thing....but two you should always remember because they work so well with almost everything.

1. Evaporation.

No two things have exactly the same boiling point. Say you've mixed ink (with an imaginary boiling point of 140c) and water (100c b.p) and you now want to separate them.

Just heat the solution to 110 and boil off the water, collect it and you're done. Although this way you are likely to get a bit of ink leftover....you could just do it again. And you may destroy the ink due to the heat. So using a rotary evaporator is encouraged. They're great.

2. Chromatography.

There's many different types but all essentially involve solvating your mixture (now, the mobile phase) and passing it through a stationary phase. The different ways the chemicals interact with each phase dictates how strongly they will stick to either and therefore allow them to separate out.

It's worth mentioning that you'll likely still need to do some evaporation to rid of the solvent afterward...but don't let that put you off. Chromatography is more sensitive and precise, you don't need to know boiling points or risk destroying anything, you can separate a tonne of different things at once...it's all good.

Answer 2

by evaporating the water with a Bunsen burner the steam/water will evaporate into the air and you will be left with pure ink.

Answer 3

Distillation is based on the differences between boiling points of the components of a mixture.

Answer 4

pour ink water into pure drinking water.