Which of the following will replace hydrogen from acids to form salts ? A. S B. Na C. Ag D. P

The correct answer is $\boxed{\text{Na}}$.

Sodium (Na) is a highly reactive metal that can displace hydrogen from acids to form salts. When sodium is added to an acid, a chemical reaction occurs in which the sodium atom replaces the

For example, when sodium is added to hydrochloric acid (HCl),

$Na + HCl \to NaCl + H_2$

The products of this reaction are sodium chloride (NaCl) and hydrogen gas (H2).

The other options are incorrect because they are not metals. Metals are the only elements that can displace hydrogen from acids to form salts.