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what volume of hydrogen sulfide is produced by reaction of 0.5 mole of sodium sulfide with hydrochloric acid at a temp. of 20C and a pressure of 722 mm.

  • chemistry -

    Na2S + 2HCl ==> H2S + 2NaCl
    mols Na2S = 0.5
    From the equation you see it produces 1 mol H2S for 1 mol Na2S; therefore, you should obtain 0.5 mol H2S.
    Use PV = nRT, substitute the conditions and solve for V.

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