Will the recorded temperature change for an exothermic reaction performed in a g

Question

Will the recorded temperature change for an exothermic reaction performed in a glass calorimeter be greater or less than that in Styrofoam "coffee cup" calorimeter? Explain. Assume glass to be a better conductor of heat than Styrofoam. An acid-base neutralization reaction is exothermic. For the measurement of the enthalpy of neutralization, delat H_s, for the reaction, heat is inevitably lost to the calorimeter (beaker or Styrofoam cup). How will this unaccounted for heat loss affect the reported value for the enthalpy of neutralization for the reaction? Explain. Three student chemists measured 50.0 mL of 1.00 M NaOH in separate styrofoam "coffee cup" calorimeters (Pan B). Andrew added 50.0 mL of 1.10M HCI to his solution of NaOH; Lyndsay added 45.5 mL of 1.10 M HQ (equal moles) to her NaOH solution. Dale added 50.0 mL of 1.00 M HCI to his NaOH solution. Each student recorded the temperature change and calculated the enthalpy of neutralization. Two of the chemists will report, within experimental error, the same temperature change for the HCl/NaOH reaction. Identify the two students and explain.

Explanation / Answer

The recorded temperature change for an exothermic reaction in a glass calorimeter is less than the Styrofoam cup calorimeter.

Because more heat will transfer via the walls of the calorimeter hence glass will conduct heat away more as compare to Styrofoam.

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