Three student chemists measure 50.0 mL of 1.00 M NaOH in separate Styrofoam \"co

Question

Three student chemists measure 50.0 mL of 1.00 M NaOH in separate Styrofoam "coffee cups" calorimeters. Brett added 50.0 mL of 1.10 M HCl to his solution of NaOH; Dale added 45.5 mL of 1.10 M HCl (equal moles) to his NaOH solution. Lyndsay added 50.0 mL of 1.00 M HCL to her 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 temp change for the HCl/NaOH reaction. Identify the two students and explain.

Explanation / Answer

Brett and dale will report as they dont neutralize the soln perfectly.

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