at 25 degrees Celsius the following enthalpies of reaction are know 2ClF+O2--->C

Question

at 25 degrees Celsius the following enthalpies of reaction are know

2ClF+O2--->Cl2O+F2O  167.4KJ/mol

2ClF3+2O2--->Cl2O+3F2O   341.4KJ/mol

2F2+O2--->2F2O   -43.4KJ/mol

at the same temperature, determine the delta Hf for the following reaction:

ClF+F2-->ClF3

please give me step by step and explain in deatail. please dont be lazy

i am having issues complrehending how to flip equations around to make them work and i have an exam tues

Explanation / Answer

2ClF+O2--->Cl2O+F2O 167.4KJ/mol................1 2ClF3+2O2--->Cl2O+3F2O 341.4KJ/mol................2 2F2+O2--->2F2O -43.4KJ/mol................3 ClF+F2-->ClF3 deltaH = ? delta H = eq.1/2 - eq.2/2 + eq.3/2 = - 108.5 KJ/mol

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