Ask Question
14 October, 01:54

When 1.98 g of NaOH (molar mass = 40 g/mole) are added to 75.0 mL of a 0.350 M HCl solution in a coffee-cup calorimeter, the temperature changes from 21.7°C to 25.8°C. If the resulting solution has a mass of 78.2 grams and a specific heat capacity of 3.97 J/g°C, what is the enthalpy change (ΔHrxn) for this reaction in kJ/mole.

+5
Answers (1)
  1. 14 October, 02:14
    0
    (ΔHrxn) = 1.273kJ/mol

    Explanation:

    Applying

    m=78.2, c = 3.97, ∆t = 25.8-21.7

    (ΔHrxn) = mc∆t

    =78.2 * 3.97 * 4.1 = 1.273kJ/mol
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “When 1.98 g of NaOH (molar mass = 40 g/mole) are added to 75.0 mL of a 0.350 M HCl solution in a coffee-cup calorimeter, the temperature ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers