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17 July, 08:25

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g HCl into mol using molar mass)

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Answers (2)
  1. 17 July, 09:25
    0
    The volume of the solution is 0.046 L or 46 mL

    Explanation:

    Step 1: Data given

    Concentration of solution = 1.45 M

    Mass of HCl = 2.43 grams

    Molar mass of HCl = 36.46 g/mol

    Step 2: Calculate moles of HCl

    Moles HCl = mass HCl / molar mass HCl

    Moles HCl = 2.43 grams / 36.46 g/mol

    Moles HCl = 0.0667 moles

    Step 3: Calculate volume of solution

    Volume = moles HCl / concentration HCl

    Volume = 0.0667 moles / 1.45 M

    Volume = 0.046 L = 46 mL

    The volume of the solution is 0.046 L or 46 mL
  2. 17 July, 09:26
    0
    0.046L or 46mL

    Explanation:

    The following data were obtained from the question:

    Molarity = 1.45 M

    Mass is HCl = 2.43 g

    Volume = ... ?

    To obtain the volume of the solution, first, we need to calculate the number of mole of HCl in the solution. This can obtain as follow:

    Mass of HCl = 2.43 g

    Molar mass of HCl = 1 + 35.5 = 36.5g/mol

    Number of mole of HCl = ... ?

    Number of mole = Mass/Molar Mass

    Number of mole of HCl = 2.43/36.5

    Number of mole of HCl = 0.067 mole

    Now, we can obtain the volume of the solution as follow:

    Mole of HCl = 0.067 mole

    Molarity = 1.45 M

    Volume = ... ?

    Molarity = mole / Volume

    Volume = mole / Molarity

    Volume = 0.067/1.45

    Volume = 0.046L

    Therefore, the volume of the solution is 0.046L or 46 mL
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