Answer to Question #210205 in General Chemistry for princess

Question #210205

A standard NaOH solution was prepared by dissolving 0.05 mol of NaOH in 250 mL of

distilled water. 25 mL of the prepared NaOH solution was titrated with 0.15 M H2SO4

solution. Calculate the volume of H2SO4 solution that is required to reach the equivalence

point.


1
Expert's answer
2021-06-25T05:02:03-0400

"H_2SO_4+ 2NaOH \\to Na_2SO_4 +H_2O"

molarity of NaOH = "\\dfrac{0.05}{250}\u00d7 1000 = 0.2M"


"\\dfrac{c_Av_A}{c_Bv_B} = \\dfrac{n_A}{n_B}"


"\\dfrac{0.15\u00d7 v_A}{0.2\u00d725} =\\dfrac12"


"v_A = \\dfrac{0.2\u00d7 25}{0.15\u00d7 2} =\\dfrac{5}{0.3} = 16.67mL"

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