metals bond with halogens to form colorless metal halides. during an experiment, chlorine water was added to a solution of sodium iodide. a record of the experiment is shown.

experimental record
reactants: ci2 nai color of reactants: colorless solution color of reactants after mixing: brown colored solution is formed

which of the following conclusions can be made about this chemical reaction based on the data?
iodine is more reactive than chlorine.
sodium iodide and chlorine do not react.
sodium chloride is formed from a single replacement reaction.
iodine is colorless and is formed from a single replacement reaction.

Sodium chloride is formed from a single replacement reaction.

Explanation:

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

i believe the answer is a.