I have a question I just for some reason do not get it
For the reactions H2(g) +I2(g) --> 2HI(g), 0.200mol H2 and 0.400mol I2 are placed in a sealed container of volume 4.0dm3. At equilibrium, 0.140mol H2 remains.
a) Determine the equilibrium amounts of I2 and HI present
b) Calculate the value of Kc under these conditions