In today\'s workshop we will the calculate mole of enthalpy of reaction or the u

Question

In today's workshop we will the calculate mole of enthalpy of reaction or the use occurs in a system when 1 enthalpy change that matter is transformed by a chemical reaction at 1 atm: H qrsan (in /mol, at constant pressure and pv-work only) where q cmAT Let's consider the following chemical experiment: student wants to measure the heat of neutralization reaction. To do this she of mixed in a cup calorimeter 35.0 mL of 0.70M HCl and 6 mL coffer 0.50M NaoH solution both at 22.00c initially. She then continued to measure the temperature of the mixture for 10 minutes

Explanation / Answer

Calorimetry

HCl + NaOH ==> NaCl + H2O

3. moles of HCl = 0.7 M x 35 ml

                          = 24.5 mmol

moles of NaOH = 0.5 M x 65 ml

                          = 32.5 mmol

HCl being the lower moles, is the limiting reactant.

moles of water formed = 24.5 mmol

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