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March 28, 2017

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In a constant-pressure calorimeter, 50.0 mL of 0.300 M Ba(OH)2 was added to 50.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 24.50 degrees C to 28.59 degrees C. If the solution has the same density and specific heat as water, what is delta H for this reaction (per mole of H2O produced)? Assume that the total volume is the sum of the individual volumes. Delta H = ___ kJ/mol H2O

  • Chemistry - ,

    q = mass H2O x specific heat H2O x (Tfinal-Tinitial)
    q/0.03 mol = J/mol and divide by 1000 to convert to kJ.
    Ba(OH)2 + 2HCl ==> BaCl2 + 2H2O
    0.015mol...0.03......0.015..0.03 mol

  • Chemistry - ,

    wait i got (18g)(4.18J)(28.59-24.50) which brings me to 307.7316, is that right? is that when i divide by 0.03? and then divide by 1000? that brought me to 10.257 is this correct..?

  • Chemistry - ,

    I got it thanks!

  • Chemistry - ,

    DrBob222 you are very unclear.... why did you do all that?

  • Chemistry - ,

    where did 0.03moles come from

  • Chemistry - ,

    IS this right?

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