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For H2SO4 we have a total of 32 valence electrons. Put a pair between the atoms. We're forming chemical bonds here. We've used 8, 10, 12, and then around the outside to fill the octets on the Oxygens, 14, and 32.So this looks like a pretty good Lewis structure for H2SO4. In the H 2 SO 4 Lewis structure Sulfur is least electron electronegative atom and goes in the center of the Lewis structure. 2  When we have an H (or H2) in front of a polyatomic molecule (like CO 3, SO 4, NO 2, etc.) we know that it's an acid.
In your case, sulfuric acid (H2SO4) has two proton equivalents, so its normality is twice its molarity. Therefore, a 0.5 N H2SO4 solution is the same as a 0.25 M H2SO4 solution...ut sulfuric can dissociate to two moles of H+ and one sulfate so that a 1 M H2SO4 solution is 2N. Your 0.5N sulfuric acid is, therefore, 0.25 M as the 0.25 moles of H2SO4 give 0.5 moles of reactive hydrogen ions. James Â· 6 years ago.