Use the concept of calorimetry to determine the heat of neutralization between KOH and HCl using the provided molarities, volume and temperature
For this problem, follow the steps:
Step 1. Calculate change in temperature
Step 2. Determine the amount of heat released
The neutralization reaction of KOH(aq) and HCl(aq) is
KOH(aq) + HCl(aq) → KCl(aq) + H2O(l)
A coffee cup calorimeter is used to determine ∆H for the following neutralization reaction:
KOH(aq) + HCl(aq) → H2O(l) + KCl(aq)
When 100. mL of 0.500 M KOH was added to 100. mL of 0.500 M HCl, the temperature of the resulting 200. gram solution increased from 23.40°C to 26.80°C. If the specific heat of the solution is 4.184 J g−1 °C−1 and the small heat capacity of the coffee cup calorimeter is ignored, what is the enthalpy of the neutralization per mole of H2O produced?
(A) 28.5 kJ
(B) -56.9 kJ
(C) 14.3 kJ
(D) 56.9 kJ
(E) -28.5 kJ
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Constant-Pressure Calorimetry concept. You can view video lessons to learn Constant-Pressure Calorimetry. Or if you need more Constant-Pressure Calorimetry practice, you can also practice Constant-Pressure Calorimetry practice problems.
What is the difficulty of this problem?
Our tutors rated the difficulty ofA coffee cup calorimeter is used to determine ∆H for the fol...as high difficulty.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Hooker's class at UW-MADISON.