Ask Question
9 September, 12:24

What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 g/ml by 7.80°C? (The specific heat of the solution is 3.74 joules/gramK.) A. - 7.43 kJ

+4
Answers (1)
  1. 9 September, 14:02
    0
    328.4KJ

    Explanation:

    Before we move on to calculate enthalpy change, we calculate the amount of heat Q

    Q = mcΔT

    m = density * volume = 250 * 1.25 = 312.5g

    c = 3.74J/g. k

    ΔT = 7.80 + 273.15K = 280.95K

    Q = 312.5 * 3.74 * 280.95 = 328,360.312 J = 328.4KJ (1000J = 1KJ, so divide by 1000)

    The enthalpy change in the reaction is same as amount of heat transferred = 328.4KJ
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers