What is the cncentration of 75mL solution of HCl, if the solution neutralizes after 17.89 mL of 1M NaOH is added to the solution.

Question

What is the cncentration of 75mL solution of HCl, if the solution neutralizes after 17.89 mL of 1M NaOH is added to the solution.

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Thanh Hà 1 month 2021-08-11T09:21:45+00:00 1 Answers 0 views 0

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    2021-08-11T09:22:53+00:00

    Answer:

    0.24 M

    Explanation:

    Step 1: Write the balanced neutralization reaction

    NaOH + HCl ⇒ NaCl + H₂O

    Step 2: Calculate the reacting moles of NaOH

    17.89 mL (0.01789 L) of 1 M NaOH react.

    0.01789 L × 1 mol/L = 0.01789 mol

    Step 3: Calculate the moles of HCl that reacted with 0.01789 moles of NaOH

    The molar ratio of NaOH to HCl is 1:1. The moles of HCl that reacted are 1/1 × 0.01789 mol = 0.01789 mol.

    Step 4: Calculate the molar concentration of HCl

    0.01789 moles are in 75 mL (0.075 L) of HCl,

    [HCl] = 0.01789 mol/0.075 L = 0.24 M

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