According to reference table j, which of these metals will react mostreadily with 1.0 m hcl to produce h2() ca (3) mg(2) k (4) zn

The correct answer is Option 2.

Explanation:

The reaction between a metal and HCl is a type of single displacement reaction.

Single replacement reactions are defined as the reactions in which more reactive metal replaces less reactive metal from its chemical equation. The reactivity is determined from the series called reactivity series. The metal lying above in the series is more reactive than the metal lying below in the series.

General equation for these types of reactions is:

From the series attached below, the most reactive metal is Potassium (K).

Increasing order of the reactivity of metals are:

Hence, the correct answer is Option 2.