Question

What is the role of the metal or recent on the arrows of the given chemical reaction?

Answer 1

Hy here is the Answer....

• The up arrow being directed towards the top means that the compound or any gas that has been formed is “escaped” or “liberated” during a chemical reaction where as down arrow means that the compounds which is formed being insoluble is settled down , which we call in chemistry as “precipitates” out.

Answer 2

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(a) Ni acts as a catalyst.

(b) Concentrated H2S04 acts as a catalyst and a dehydrating agent...

hope!!...it helps uhh...❣️