i-using-the-first-two-temperatures-and-vapor-pressures-in-the-table-calculate-th

Question

(i) Using the first two temperatures and vapor pressures in the table, calculate the ΔH_vap for benzene (C₆H₆) in kJ/mol.

(ii) Plot the values in the table then determine the ΔH_vap for benzene (C₆H₆) in kJ/mol.

(iii) Compare the values obtained using the two methods.

Table showing temperatures and vapor pressures for benzene in K and mmHg.

Accepted Answer

(i) 34.1 kJ/mol; (ii) 34.1 kJ/mol; (iii) The ΔH_vap obtained from the two methods are the same.

Answer

(i) 34.1 kJ/mol; (ii) 33.3 kJ/mol; (iii) The ΔH_vap obtained from the two methods are slightly different.

Answer

(i) 33.3 kJ/mol; (ii) 33.3 kJ/mol; (iii) The ΔH_vap obtained from the two methods are the same.

Answer

(i) 33.3 kJ/mol; (ii) 34.1 kJ/mol; (iii) The ΔH_vap obtained from the two methods are slightly different.