Question

Which gas is usually liberated when an acid reacts with a metal how do you test from the presence from the gas

Answer 1

Answer:

Hydrogen gas

Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: Itcan be tested by bringing a burning candle near the gas. The candle continues burning with a pop sound.

Answer 2

$\large\bf\pink{Solution→}$

When an acid reacts with any metal, salt and hydrogen gas are formed.

$\large\mathrm\</u><u>r</u><u>e</u><u>d</u><u>{</u><u>Metal + Acid → Salt + Hydrogen </u><u>\</u><u>:</u><u>gas</u><u>}$