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? asked in Science & MathematicsChemistry · 2 weeks ago

PLEASE HELP! What is the molarity of HCl if 39 mL of the solution is titrated with 72.1 mL of 0.543 M NaOH?

What is the molarity of HCl if 39 mL of the solution is titrated with 72.1 mL of 0.543 M NaOH?

a. 0.33 M

b. 0.29 M

c. 1.00 M

d. 0.52 M

1 Answer

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  • Roger the Mole
    Lv 7
    2 weeks ago

    HCl + NaOH → NaCl + H2O  [balanced as written]

    (72.1 mL) x (0.543 M NaOH) x (1 mol HCl / 1 mol NaOH) / (39 mL HCl) = 1.00 M HCl

    So answer c.

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