Question

Hydrogen chloride(HCl) reacts with metals to form:

• A. Metal chlorides and hydrogen
• B. Metal chlorides and water
• C. Metal chlorides and oxygen
• D. Metal chlorides and nitrogen

Answer 1

The correct option is A

Metal chlorides and hydrogen

The chemical compounds which liberate $H^{+}$ ions upon dissolution are known as acids. When there's a reaction between a metal and an acid, then the gas produced is Hydrogen (i.e., in molecular form-$H_2$). So, Hydrogen chloride reacts with metals to form metal chlorides along with the liberation of hydrogen gas.

Metal + acid → Metal with radical + $H_2$

But metals like Au, Hg, and Ag won't liberate $H_2$ gas.