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4 July, 15:31

When 8.0 grams of sodium hydroxide is dissolved in sufficient water to make 400. mL of solution, what is the concentration of the solution?

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  1. 4 July, 19:03
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    The concentration of this sodiumhydroxide solutions is 0.50 M

    Explanation:

    Step 1: Data given

    Mass of sodium hydroxide (NaOh) = 8.0 grams

    Molar mass of sodium hydroxide = 40.0 g/mol

    Volume water = 400 mL = 0.400 L

    Step 2: Calculate moles NaOH

    Moles NaOH = mass NaOH / molar mass NaOH

    Moles NaOH = 8.0 grams / 40.0 g/mol

    Moles NaOh = 0.20 moles

    Step 3: Calculate concentration of the solution

    Concentration solution = moles NaOH / volume water

    Concentration solution = 0.20 moles / 0.400 L

    Concentration solution = 0.50 M

    The concentration of this sodiumhydroxide solutions is 0.50 M
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