Use le chatelier's principle to explain why the solubility of iodine in water increases as the concentrations of potassium iodide increases

The theory,depends on the various factors:-

According to the question, the molecule moves from high concentration to low concentration in different volumes and Pressure.

Then, increasing the concentration of the iodide ions creates a disturbance. According to theory, the system will react in a way that tends to reduce the disturbance.

The reaction shift in the forward direction, to make more triiodide ions and consume some of the added iodides with aqueous iodine. This causes more solid iodine to dissolve in the solution (increasing concentration).

Reaction: I₂(aq) + I⁻ (aq) ⇄ I₃⁻(aq).

For more information, refer to the link:-

link

hi,

the answer is d, it has indefinite shape but definite volume.

hope this !

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.