Given the equation representing a system at equilibrium:
n2(g) + 3h2(g)< ==> 2nh3(g) + energywhich changes occur when the temperature of this system is decreased?
(1) the concentration of h2(g) increases and the concentration of n2(g) increases.
(2) the concentration of h2(g) decreases and the concentration of n2(g) increases.
(3) the concentration of h2(g) decreases and the concentration of nh3(g) decreases.
(4) the concentration of h2(g) decreases and the concentration of nh3(g) increases.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation: