Metal Hydrides vs. Hydrogen Halides

Alcohols react with metal hydrides, MH, and with hydrogen halides, HX, but in very different ways. Proton transfer is involved in both reactions, but different molecules act as the proton donor and acceptor. 

Examine electrostatic potential maps for potassium hydride and hydrogen chloride. How are they similar and how are they different (Focus on whether the molecules are polar or nonpolar (compare dipole moments), and on the electronic character of hydrogen.) Draw the ionic Lewis structure that is most consistent with each electrostatic potential map. Does each atom have a filled valence shell  

Examine the electrostatic potential map of 1-propanol. Which atom is most negatively charged Most positively charged Use the maps to explain propanol s reactivity toward KH and HCI. 

Both NaH and KH are used to deprotonate alcohols. KH is more reactive than NaH. Compare atomic charges and electrostatic potential maps of potassium hydride and sodium hydride. For which is the hydrogen more negatively charged Which should be the better source of hydride  

Another factor to consider is the energy required to break solid MH into individual molecules. Calculate the dissociation energies for sodium hydride dimer and potassium hydride dimer, i.e. 

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