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 3.33 °c? (the specific heat of the solution is 3.74 joules/gram-k.) 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 3.33 °c? (the specific heat of the solution is 3.74 joules/gram-k.) -3.89 -7.43 8.20 6.51 -12.51

-3,89

Explanation:

First to consider is that the reaction is raising the temperature of the solution, so it's an exothermic reaction.

The enthalpy can be calculated by the following equation:

First we need to calculate the mass using the density and the volume:

⇒

Then we have Cp = 3,74 Joules/gram°K  ΔT = -3,33 °C (cause of exothermic reaction)

Replacing in the formula:

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