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17 June, 04:26

10.0 ml of 1.00 M HCl neutralized 20.0 ml of a NaOH solution. What was the molarity of the NaOH?

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  1. 17 June, 05:39
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    0.500 M

    Explanation:

    The balanced equation for the neutralization reaction is as follows

    NaOH + HCl - > NaCl + H2O

    Molar ratio of NaOH to HCl is 1:1

    Number of moles of NaOH reacted is equal to the number of HCl moles

    We can use the following equation

    c1v1 = c2v2

    Where c1 is concentration and v1 is volume of HCl

    c2 is concentration and v2 is volume of NaOH

    Substituting the values

    1.00 M x 10.0 mL = c2 x 20.0 mL

    c2 = 0.500 M

    Concentration of NaOH is 0.500 M
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