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An ink is a mixture of coloured substances dissolved in water - Edexcel - GCSE Chemistry - Question 6 - 2018 - Paper 1
Question 6
An ink is a mixture of coloured substances dissolved in water. (a) Which method is used to separate the coloured substances in the ink? A chromatography B crys... show full transcript
Worked Solution & Example Answer:An ink is a mixture of coloured substances dissolved in water - Edexcel - GCSE Chemistry - Question 6 - 2018 - Paper 1
Step 1
Which method is used to separate the coloured substances in the ink?
Answer
The correct method to separate the coloured substances in the ink is chromatography. This technique is used to separate mixtures based on the movement of substances through a stationary phase, allowing different components to travel at different rates.
Step 2
The apparatus shown in Figure 9 can be used to separate water from ink.
Answer
The apparatus illustrated in Figure 9 is likely to be a distillation setup. This method involves heating the ink solution to evaporate the water, which is then condensed and collected separately, effectively separating it from the ink.