Identify the oxidation state of H in HClaq Cas 2 HClaq CaC

Identify the oxidation state of H in HCl(aq).

Ca(s) + 2 HCl(aq)  ® CaCl₂(aq) + H₂(g)

Solution

The oxidation state of H in HCl is +1

Explanation: The charge of Cl is -1 so the oxidation state of H is +1.

X + (-1) = 0

X - 1 = 0

X = +1