Unknown halogen x2 was added to each of two test tubes which contained aqueous nacl and aqueous nai, respectively. when hexane was added to the test tubes, an orange color developed in the top layer of the first test tube, while purple developed in the second.

a. identify x2.
b. write a balanced equation for each reaction which occurred.

Explanation:

The compound is .

The reaction included are:

 (because  bromine is less reactive than chlorine)

But , because of hexane the solution get dilute and its color changes to orange.

Now, NaI is added and we know Br is more reactive than I.

Therefore it replace it.

Reaction:

Purple color develop due to formation of Iodine.

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

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