The values of pKa for CH3CO2H and CF3CO2H are 4.75 and 0.23, both of which are very nearly independent of temperature. Suggest reason for this difference.

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Answer explain why it is not possible to deduce a complete order of reactivity.

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.