KA140317001    高中 / 化學   

2016/12/31 14:50

Three moles of H₂(g) and 3.00 moles of I₂(g) are introduced into a 1-liter box at a temperature of 490°C. Find the concentration of each substance in the box when equilibrium is established.

The reaction proceeds to equilibrium and

                     

At equilibrium, then,

[H2] = (3.00 − x) mol/L	(where x is the number of moles of H2 that are in the form of HI at equilibrium)
[I2] = (3.00 − x) mol/L	(the same x is used since 1 mol of H2 requires 1 mol of I2 to react to form 2 mol of HI)

[HI] = 2x mol/L

黃色的地方看不懂可以麻煩用文字解釋一下