The log of the hydronium ion concentration
Answer:
The easiest way to identify a double displacement reaction is to check to see whether or not the cations exchanged anions with each other.
Explanation:
if the states of matter are cited, is to look for aqueous reactants and the formation of one solid product (since the reaction typically generates a precipitate).
Oxygen is an element, symbol O
Magnesium oxide is an ionic compound, formula MgO