Which of the following reactions is defines `Delta_(f)H^(Theta)`?

Which of the following reactions will define DeltaH_(f)^(@) ?

Which of the following reaction define DeltaG_(f)^(@) ?

Which of the following reactions will define DeltaH_(f)^(@) ?

For which one of the following equations is Delta_(r) H^(theta) equal to Delta_(f) H^(theta) for the product ?

Which of the following reaction has Delta H = Delta U ?