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21 June, 14:55

Calculate the mass of sodium acetate (CHaCOONa) required to prepare 50 mL of a 0.10 M sodium acetate solution. Calculate the volume of 1 M sodium hydroxide (NaOH) needed to prepare 10 mLcf a 0.10 M sodium hydroxide solution

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  1. 21 June, 16:24
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    a) mCH3COONa=?, Vsln=50mL (0.05L); [sln]=0.1M∴M≡ (mol/L)

    b) VslnNaOH=?; [slnNaOH]=1M; Vsln2=10mlcf; [sln2]=0.1M

    Explanation:

    a) PMCH3COONa=82.03g/mol

    ⇒ 0.05L*0,1mol/L*82.03g/mol = 0.4102g CH3COONa

    R / mCH3COONa = 0.4102g

    b) V1*M1 = V2*M2 ... dilution form.

    ⇒V1 * (1M) = (10mlcf) * (0.1M)

    ⇒V1 = ((10mlcf) * (0.1M)) / (1M)

    ⇒V1 = 1mlcf

    R / Vsln NaOH = 1mlcf
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