When the concentration of a system is changed:

the equilibrium constant changes.
either the numerator or the denominator of the mass action expression will change.
the mass action expression changes exponents.
the concentrations change to maintain the original value of k.

The correct statement is the concentrations change to maintain the original value of K.

Explanation:

According to the Le-Chatlier's principle, if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect and to maintain the original value of equilibrium constant.

If the concentration of reactants are increased, the equilibrium will shift in the forward direction to decrease the concentration of reactants and if the concentration of reactants are decreased, the equilibrium will shift in the backward direction to decrease the concentration of products.

Hence, the correct statement is the concentrations change to maintain the original value of K.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

i think its 5049.

i hope this !