3. Given the enthalpy of formation data in the table below what is the enthalpy

Question

3. Given the enthalpy of formation data in the table below what is the enthalpy of readson for the reacton you performed in eis lab? How does this compare to your experimental results? To calculate, the enthalpy of reaction, use the formula below. 4H,en zaht (products) ZAH, (reactants) Note that you will need the balanced chemical equation forthe reacton performed in the lab, which can be found inhe Background section of the lab manual. Also note that AH. for standard state elements is 0 kJ/mol. Substance (ld/mol) MgCI2(aq) 796.9 kJ/mol HCI(aq) 167.2 mol

Explanation / Answer

Mg+2HCl-->MgCl2+H2

Since Enthalpy of pure elements is zero,

Hp-Hr=-796.9+334.5= - 462.5 kJ/mol

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