Question

what happens when magnesium reacts with nitric acid give formula ( please not that hydrogen is not evolved ).​

Answer 1

Answer:

Dilute nitric acid behaves as a typical acid in its reaction with most metals. Magnesium, manganese, and zinc liberate H2: Mg + 2 HNO3 → Mg(NO3)2 + H2 (Magnesium nitrate) ... Upon reaction with nitric acid, most metals give the corresponding nitrates

Answer 2

Magnesium on reaction with nitric acid result in the formation of magnesium nitrate.

$Mg+2HNO_3 \rightarrow Mg(NO_3)2+H_2$

It is definitely true that hydrogen is not evolved in the reaction. But during the reaction, there is definitely evolution oh hydrogen. But nitric acid is a powerful oxidising agent. It oxidises the liberated hydrogen gas to water, hence we are not able to see hydrogen evolution.

Note: Magnesium and manganese on reaction with very dilute nitric acid liberates hydrogen.

HOPE THIS HELPS!!