What volume of 0.500 M H₂SO₄is needed to react completely with 20.0 mL of 0.400 M LiOH? A)4.00 mL B)8.00 mL C)12.5 mL D)16.0 mL E)32.0 mL

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The balanced equation is H2SO4 + 2LiOH → Li2SO4 + 2H2O. The mole ratio of H2SO4 to LiOH is 1:2. Calculate moles of LiOH: 0.400 M * 0.020 L = 0.008 moles. Moles of H2SO4 needed: 0.008 moles / 2 = 0.004 moles. Volume of H2SO4: 0.004 moles / 0.500 M = 0.008 L = 8.00 mL.

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