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chmistry

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A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ΔH°comb for aniline.

  • chmistry - ,

    q = Cp*dT = 4.25 kJ/C x (69.8-29.5) = ?kJ and you need to assign the proper sign.
    Then qaniline/g = ?kJ/4.98 and
    q analine in kJ/mol = (?kJ/4.98) x (molar mass) = xx.

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