how many grams of NaOH will make 1M of its aqueous solution in 1000cm3

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how many grams of NaOH will make 1M of its aqueous solution in 1000cm3

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Diễm Thu 5 years 2021-07-22T02:07:46+00:00 1 Answers 47 views 1

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  1. Tryphena
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    2021-07-22T02:09:26+00:00
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    Answer: The mass of NaOH is 40 g

    Explanation:

    Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

    \text{Molarity of solution}=\frac{\text{Given mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (mL)}} …..(1)

    Given values:

    Molarity of NaOH = 1 M

    Molar mass of NaOH = 40 g/mol

    Volume of the solution = 1000cm^3=1000 mL            (Conversion factor: 1cm^3=1mL)

    Putting values in equation 1, we get:

    1=\frac{\text{Mass of NaOH}\times 1000}{40\times 1000}\\\\\text{Mass of NaOH}=\frac{1\times 40\times 1000}{1000}=40g

    Hence, the mass of NaOH is 40 g

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