Oxides of the active metals combine with acid to form ________.
A)hydrogen gas
B)metal hydrides
C)water and a salt
D)oxygen gas
E)metal hydroxides

Question

Quizplus · Accepted Answer

When active metals react with acids, they produce metal salts and hydrogen gas. This process is known as acid-metal reaction or metal-acid reaction. For example, when magnesium reacts with hydrochloric acid, magnesium chloride salt and hydrogen gas are produced as follows:
Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
Here, the oxide of magnesium (MgO) was not mentioned. However, if it reacts with an acid, it will produce magnesium salt and water, as follows:
MgO (s) + 2HCl (aq) → MgCl2 (aq) + H2O (l)

Oxides of the Active Metals Combine with Acid to Form