Question 238140

Consider the following reaction:

                       6 NiO(s) + 4 ClF3(g) ® 6 NiF2(s) + 2 Cl2(g) + 3 O2(g)

           What mass of NiO will react with a sample of ClF3 gas that has a pressure of 250 torr in a 2.5-L flask at 20°C?