AP Chemistryeasymcq1 pt
Multiplying a reaction equation by 2 does what to its ΔH?
A.Doubles it
B.Halves it
C.Leaves it unchanged
D.Squares it
Explanation
Core Concept
ΔH is extensive — twice the reaction involves twice the enthalpy change. Coefficients scale ΔH directly in Hess's law manipulations.
Correct Answer
ADoubles it
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