If 100 milliliters of 0.75 M HCl is required to exactly neutralize 50 milliliters of KOH, what is the concentration of the base?

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.