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Crazy boy [7]
3 years ago
13

3. Hydrochloric acid is used to clean metals.

Chemistry
2 answers:
alina1380 [7]3 years ago
8 0

Answer:

Base

Explanation:

Acid + Base ⇒ Salt + Water (Neutralization Reaction)

So the substances forming salt and water must be acid and base.

Since HCl is acid so the Metal Oxide would be the base.

ss7ja [257]3 years ago
4 0
The answer to your question is option b, a base. This is because the question clearly tells you that one reactant is an acid. Then, it tells you that an acid plus something gives you a salt and water, as products

From background knowledge, we know that a base plus acid gives you a salt and water. The hydroxide ions from the base neutralise the hydrogen ions from the acid, which gives you water ( as it has a pH of 7).

Therefore, your answer is b, a base
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