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lawyer [7]
3 years ago
5

. Why do you use a pencil and not a pen to mark TLC plates?

Chemistry
1 answer:
KonstantinChe [14]3 years ago
7 0

Answer:

Pencil is always used to mark chromatography paper or TLC plates because ink may run and interfere with the chromatogram. ... As soon as the paper/plate is taken out, mark the solvent front with a pencil before the solvent evaporates and the front becomes impossible to see.

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The reaction equation is:
<span>2CuO(s) + C(s) </span>→ <span>2Cu(s) + CO</span>₂<span>(g)

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