Oxidation of gaseous ClF by F2 yields liquid ClF3 an importa

Oxidation of gaseous ClF by F2 yields liquid ClF3, an important fluorinating agent. Use the following 0 thermochemical equations to calculate AH for the production of ClF3: rxn (1) 2 CIF(g) + O2(g) C40(g) + OF2(g) (2) 2 F2(g) + O2(g)--2 0F2(g) (3) 2 ClF3() + 2 O2(g) Cl20(g) + 3 OF2(g) AH-167.5 kJ AHo =-43.5 kJ = 394.1 kJ kJ

Solution

From the gioven reactions (1) +(2) - (3) will give the desired equation for the formation of ClF3 as below:

2 ClF + 2F2 ----- > 2 ClF3

Delta H_rxn for the production of ClF3 = 167.5 kJ + (-43.5 kJ) - (394.1 kJ) = -270.1 kJ