Question

A piece of magnesium and a piece of charcoal is put in two separate (2)

beakers. To each beaker 5 mL of hydrochloric acid is added. A lit
matchstick was brought close to the mouth of the beakers. The burning

matchstick extinguishes with a pop sound when placed over the beaker
with magnesium and acid but not when placed over the beaker with

charcoal and acid. What comparison can be drawn between magnesium

and charcoal?.​

Answer 1

Answer:

In case of metals (Here, Zn) having reduction potentials less than that of H+, when such metals are contacted with strong acids like H2SO4, following reaction occurs:

Zn+H2SO4 ------ ZnSO4 + H2

Hence, due to formation of hydrogen gas bubble in the liquid solution, pop up sound is heared

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