Calculate the enthalpy change at 300kalven for the reaction?
What reaction?
Give the heat of formation of methyl cloride CH3cl -85 and C2H6 is -9090 kgjul/mole respectivly solution: deltaH ={H product -{H reaction =[2*(-85)] -[ -90] =-170-90 =-80.
You still don't have a reaction.
To calculate the enthalpy change of a reaction, you need to know the specific enthalpy values of the reactants and products involved in the reaction. The enthalpy change, denoted as ΔH, can be determined using the equation:
ΔH = Σ(ΔH products) - Σ(ΔH reactants)
Here's how you can calculate the enthalpy change at 300 Kelvin:
1. Determine the specific enthalpy values (ΔH) of the reactants and products in the reaction. These values can be found in thermodynamic tables, or you may need to calculate them using other available data.
2. Write out the balanced chemical equation for the reaction. For example, if you have the following reaction:
A + B → C + D
Then you need to find the enthalpy values for A, B, C, and D.
3. Calculate the sum of ΔH for the reactants by adding up the individual enthalpy values of A and B.
4. Calculate the sum of ΔH for the products by adding up the individual enthalpy values of C and D.
5. Subtract the sum of ΔH for the reactants from the sum of ΔH for the products to find the enthalpy change for the reaction at 300 Kelvin.
ΔH = Σ(ΔH products) - Σ(ΔH reactants)
Make sure that the enthalpy values are given per mole of substance. Otherwise, convert the values accordingly.
Note: It's important to consider the stoichiometry of the reaction when calculating the enthalpy change. The coefficients of the balanced equation indicate the ratio of molecules or moles involved in the reaction.