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8 December, 15:07

If 32.78 ml of naoh solution is required to neutralize 20.00 ml 0f 0.2500 m of sulfuric acid, h2so4 (aq), what is the concentration of the naoh solution? the balanced equation is: 2naoh (aq) + h2so4 (aq) → na2so4 (aq) + 2h2o (l)

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  1. 8 December, 15:49
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    The concentration of the NaOH solution is 0.3051 mol/L.

    Step 1. Calculate the moles of H_2SO_4

    Moles of H_2SO_4

    = 20.00 mL H_2SO_4 * (0.2500 mmol H_2SO_4/1 mL H_2SO_4)

    = 5.000 mmol H_2SO_4

    Step 2. Calculate the moles of NaOH

    Moles of NaOH = 5.000 mmol H_2SO_4 * (2 mmol NaOH / 1 mmol H_2SO_4)

    = 10.00 mmol NaOH

    Step 3. Calculate the concentration of the NaOH

    c = moles/litres = 10.00 mmol/32.78 mL = 0.3051 mol/L
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