If it takes 50 mL of 0.5 M KOH solution to completely neutralize 125 mL of sulfuric acid solution (H2SO4), what is the concentration of the H2SO4 solution?
2KOH+H2SO4 = K2SO4 +2H2O
the mole ratio of KOH and H2SO4 is 2:1,
x = 0.05/.125 = 0.40 M
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