Doubling the concentrations of both the acid and the base in a neutralization reaction will not double the amount of heat released. The heat released in a neutralization reaction is determined by the stoichiometry of the reaction and the enthalpy change associated with the reaction.

In a neutralization reaction, the limiting reagent will determine the amount of heat released. The limiting reagent is the one that is completely consumed in the reaction. If the concentrations of both the acid and the base are doubled, the limiting reagent will still be the same, and the amount of heat released will be the same.

Therefore, doubling the concentrations of acid and base in a neutralization reaction will not double amount heat released.