In a 1L container, µmol of HI is decomposed at 490 ° C, according to the following equation: 2HI (g) I 2 (g) + H 2 (g)
If the equilibrium constant is 46, we want to know the concentration of each of the
chemical species in equilibrium.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e