In the absence of a requirement that a power of appointment be exercised by a reference or by an express or specific reference to that power, a general residuary clause in a will or a will making general disposition of all of the testator's property expresses an intention to exercise a power of appointment held by the testator only if the power is a general power and the creating instrument does not contain a gift if the power is not exercised or the testator's will manifests an intention to include the property subject to the power.
A.R.S. § 14-2608